Salt Definition and 273 Threads

Lets say you were given an unknown which contains two salts, and your results give you evidence that potassium phosphate, ammonium, and carbonate ions are all present. What are four possible salts that could be your unknown?

Hello! 1. Homework Statement Here is the problem I can't solve, and will be grateful for your help on this - please, guid me to the understanding of how to solve such problems. The difficulty lies in replacing some of the solution with water. It would be much easier to solve if we add water...

Hello, Throwing out a question to see if anyone has some insight. The kinetic salt effect describes the variation of the rate constant of a reaction with respect to the ionic strength of the solution. The mathematical relationship considers the ionic strength (molality/ion charges) of the...

Is it feasible to ship molten salt from a Concentrated Solar Power (CSP) station to a distant site and use it there to generate power? For instance would it be practical and economic to build a CSP station in Baja California and ship molten salt up to Seattle, and use it there to generate power...

Hi, I've been really looking into going back to school for awhile now, and I don't know exactly what I want to do, however I can't see myself doing anything not related to math and science. The circumstances in my life are progressing in a manner that would make it financially feasible and...

Spherical Micelles of the surfactant DTAB, which has a cationic head, will turn into cylindrical micelles if the repulsion between the cationic heads can be reduced. I have read that adding salt (perhaps NaCl or NaBr) to this water/surfactant solution will reduce repulsion between the cations...

Homework Statement its not a homework question but I didn't know where else to ask. I want to know how we know which salt to use for salt bridge. I think I understand what we don't want the salt bridge to do --we don't want it to react, and that its function is to neutralize the solution so...

So I recently did a titration lab with a monoprotic acid and sodium hydroxide. After using stochiometric ratios I found the molar mass to be around 175g/mol. It is possible I have a huge percentage error, but can anyone think of an acid that is monoprotic and is within the range of that molar...

I understand that alanine salt ooks like this: However, does it look like that in solution? Does the salt dissociate? I know that alanine salt has a pH of about 6.113 because it is the average of the 2 pKas. However, if this salt dissociates, it seems that the carboxyl group is a weak base...

For a high school school project I'm trying to build a device that will separate ions dissolved in water. I'm pumping water trough a box that has copper plates in it, and I'm putting that in a magnetic field. Because of Lorentz force the ions should bend off to different sides and heap up...

Its given in my book that Sulphuric acid displaces more volatile acid from Metal salts like NaCl. That is, NaCl + H2SO4→ HCl + Na2SO4 What does valtility have to do with such reactions? Or Should I just accept it as a fact?

Hi! I am a freshman in college on my first week of an intro chemistry course. I think the professor may have made a mistake with the software that generates the problem sets, but I'm giving it a shot regardless. One of the questions is: An alloy with a 1:1 ratio of magnesium and strontium...

Hello, I need some help with part a. The problem state: "Suppose a brine containing .2 kg of salt per liter run into a tank initially filled with 500L of water and 5 kg of salt. The brine enters the tank at a rate 5 L/min. The mixture, kept uniform by stirring, is flowing out at the rate of...

My teacher was teaching me salt hydrolysis today and I understood everything up to hydrolysis of salt of weak acid and weak base. Then he introduced amphiprotic anion in salt. He took NaHCO3 This is what he wrote: HCO3-+H2O ##\leftrightarrows## H2CO3+OH- H2CO3##\leftrightarrows##H++HCO3-...

I just mean in a general sense, obviously not to the extreme but just in general? If you eat salty foods do you start craving salty foods , more than you would if you didn't eat so much salt? Also, same questions wrt sugar? Is there a name or well known phrase for this idea and if so what is it...

Everything as follows: I'm looking to calculate the amount of NaCl (rho=2.19 g/cm^3) needed to add to water (rho=0.999 g/cm^3) to achieve a solution with density=1.071 g/cm^3. Ideally, I want to achieve an Atwood Number of 0.035 and a density of 1.071 g/cm^3 is what I need for the solution...

http://www.ibtimes.com/hidden-ocean-found-underneath-chinas-largest-basin-larger-five-great-lakes-combined-2031541

If I tightly packed oily sand in my microwave and turned it on would it heat the sand and oil? If paraffin and salt water were present would it heat everything? Could I send the microwaves to the oven from 1 mile away thru a piece of metal conduit?

Kitchen salt is soluble in water. Whenever this happens, molecules of NaCl dissociate into the two chemical entities that form such molecule, the cation Na+ and the anion Cl-. Suppose I dissolve some amount of NaCl in water. Then I pour part of this solution into another glass. Is it...

I have a variation on the concentrating tank problem that I'm having a bit of trouble solving. I have a tank of 10 kg of pure water at time 0. I add a time dependent concentration of salt and remove the same volume of pure water so that the tank volume never changes. Once the tank has 1 kg of...

In our textbook,it is written that-Salt bridge connects the solutions in 2 half cells and complete the circuit.If it is removed from a cell,then the voltage of the cell drops to zero. Doubt-What I think should come is-if salt bridge is removed,the positive ions accumulated in anodic half...

I am trying to get a better understaning of the pH of a solution containing a salt of a weak base and a salt of a weak acid. I know it depends on which equlibrium constant is greater but I am thinking more of what it is that actually happens. For example let say we have a solution containing...

I went to class and watched this video () but I still don't understand how salt bridges work. I think I memorized all of the details and steps but I don't understand why anything is happening at all! I know that Cu2+ gains two electrons when it touches the electrode but why? And also does the...

1. The problem dA/dt = -.02A dB/dt = .01A - .04B dC/dt = .01A + .04B A(0)=1000 B(0)=0 C(0)=0Come up with a sketch and a word problem involving three tanks for which the system of differential equations with initial conditions above applies. Have fresh water...

When I was 17, I had sinusitis. I went to an ear, nose, and throat doctor for treatment. The doctor prescribed for me that I mix salt and baking soda in a bowl of water. Then I was to use a plastic contraption like a squirt gun to squirt the water/salt/baking soda mixture up my nose and spit...

Transatomic is recent nuclear startup by a couple of MIT nuclear engineers which has so far gathered a few million dollars in funding. Their particular design approach uses molten salt for a fuel as does the LFTR proposal, but eschews thorium for a uranium only design. The Transatomic...

Homework Statement A 200 gallon tank initially contains 100 gallons of water with 20 pounds of salt. A salt solution with 1/4 pound of salt per gallon is added to the tank at 4 gal/min, and the resulting mixture is drained out at 2 gal/min. Find the quantity of salt in the tank as it's about to...

Homework Statement A tank initially contains 40 gallons of pure water. A solution with 1 gram of salt per gallon of water is added to the tank at 3 gal/min, and the resulting solution dranes out at the same rate. Find the quantity Q(t) of salt in the tank at time t>0. Homework Equations None...

I am confused with the reduction of quaternary ammonium salt. ##Ph-CH_2-CH_2-N^+Me_3## on reduction with Zn-Hg in HCl will not work. The -NMe3 is not disturbed(given in my text). But why? Also the text says On reduction with LiAlH4 or NaBH4, -NMe3 would be disturbed. what would be the product...

Howdy! I would like to complete an electric circuit using salt water and two electrodes, however I don't want my electrodes to corrode or change the chemistry of the electrolyte (salt water), so I don't want electrolysis to take place. Is this possible? I read in a published paper that...

I'm testing Ammonium Bicarbonate in a fermentation process. Is it possible for Ammonium Bicarbonate to 'salt out' Ethanol? Compounds such as Sodium Carbonate and Ammonium Sulfate are able to salt out ethanol.

Hello, Do you know the total dissolved particle molarity of fibroblast growth media, and could I achieve to keep the osmotic pressure constant while adding both salt and water to it? (I am assuming the salt does not pass through the cell membrane) Thank you.

My challenge is to provide a low-tech (DIY) way to purify the glycerol produced from soapmaking or biodiesel production. Simple distillation is out because the boiling point for glycerol is above its smoke point. Vacuum distillation and electrolysis do not count as low-tech. :) The input...

Without the salt bridge then there is no flow of charge and there are no electrons flowing in the external circuit.?HOW?i know function of salt bridge is only to maintain neutrality i.e if salt bridge is not there there will be accumulation of positive charge in one half cell and negative charge...

So my dad got this Salt Crystal Lamp for a wedding gift that supposedly freshens the air naturally, and I need some help explaining to him why this doesn't actually work. It says on the box: "This lamp is scientifically proven to work like an air purifier. When lit, it can emit negative ions...

>According to http://www.chemguide.co.uk/physical/redoxeqia/introduction.html each electrode has an absolute electrode potential which is the difference between the positiveness and negativeness. So if we had a Zn plate in water and it has a negative charge of -5 on the metal. Would the absolute...

Homework Statement 5. A large cylinder with a diameter of 3.00 m and a height of 3.50 m is closed at the upper end and open at the lower end. It is lowered from air into sea water with the air initially at 20.0°C and then to a depth of 75.0 m. At this depth the water temperature is 4.0°C, and...

If one digs a well near the ocean can the sand filter the salt out of ocean water? If so how far inland would one have to go?

So I have a typical 9volt battery attached to a Christmas light and am attempting to demonstrate the typical "saltwater can conduct electricity" gimmick by showing that the bulb lights when completing the circuit in the solution. I'm racking my brain though and can't figure out why the bulb...

Okay let's say we have water, sodium hydroxide and hydrogen chloride. What do you think is going to happen? Do you think the pH will be the same, a little higher, or a little lower? You have this reaction down here: H2O+NaOH+HCl(assuming they are equal)= H2O+OH-+Na+(positive...

Homework Statement Find the pH of 0.20 M Iron (III) sulfate. Homework Equations The metal ion becomes hydrated (water is a ligand) and forms iron hexahydrate. The sulfate ion is a weak base. The Attempt at a Solution Now, in considering the pH of this solution, should I consider the...

Hello, In my textbook(Serway), Constructive interference of two rays hitting the first and the second planes , respectively, of a crystal lattice is derived as 2dsin(Θ)=mλ , where Θ is the angle shown in the picture. My question is: shouldn't the equation be 2dsin(Θ) = (m+1/2 )λ instead...

Hey PF. I received a Himalayan salt lamp for xmas, and it's suppose to add more negative ions to the air which is good because apparently pollution mess's up the balance. Does anyone know if these things actually work?

In such that the same manner as alkali metals I would presume?

A tank with a capacity of 500 gal originally contains 200 gal of water with 100 lb of salt in solution. Water containing 1lb of salt per gallon is entering at a rat of 3 gal/min, and the mixture is allowed to flow out of the tank at a rate of 2 gal/min. Find the amount of salt in the tank...

At the bottom of page 54 of Tungsten: Properties, Chemistry, Technology of the Elements, Alloys, and Chemical Compounds by Lassner and Schubert: I'm presuming the reaction goes something like 2H_{3}PO_{4} + 2W → 3H_{2} + 2WPO_{4} Since I'm pretty sure copper phosphate works just fine for...

Hi, I make a pyridine salt which contains the pyridine and an organic weak acid. The standard procedure to isolate the acid and remove the pyridine is to dissolve the salt in Diethyl ether with HCL, and let the diethy ether evaporate, which leaves the organic acid crystals with purity 99%...

*This is not homework, I'm a technical writer. I'm trying to understand how these terms are related and different. Here's what I have concluded so far: Wikipedia definition is that cocrystals “consist of two or more components that form a unique crystalline structure having unique...

Hi, here is a very simple solution mixing problem that I can't solve which I am really ashamed of. Problem. A vessel whose capacity is 5 liters contains 2 liters of 15% salt solution. How many liters of 20% salt solution have to be mixed to the 15% solution to produce a solution with as high...

A Couple of Questions About "Salt" OK - I understand that all salts are ionic compounds, but not all ionic compounds are salts. I also understand that salts can be formed by: * the reaction of an acid & base, or * the reaction of an acid and metal, or * the recombination of ions when...