Sodium Definition and 221 Threads

Hello everyone, Today I witnessed the titration of a sodium pentobarbital solution with 0.1M HCl. At first, a lot of white precipitate was formed. When more HCl was added the white precipitate disappeared again completely. Now I am trying to figure out what is going on. As I understand it...

Homework Statement Hi, I did a lab where benzophenone was dissolved in ethanol and reacted with sodium borohydride (NaBH4) and chromatography was done on the reaction at different points in time. There was no HCl work up of this though. When I developed the TLC (silica) plate, it looked like...

Help me! I am looking for a test method that will allow me to sample process air and measure the sodium content resulting from reactions with sodium hydroxide. This will be in the ppb range. Any suggestions or possible methods would be helpful.

Hey guys, I am a graduate of UC Berkeley taking steps to relearn chemistry, physics, and mathematics. I can assist you guys tremendously about quarks if you guys can assist me also! My high school chemistry teacher kept a piece of sodium metal in some oil to prevent the electrons from...

Hello, Would it be feasible to neutralize the effects of a 3% sodium hypochlorite and water solution by adding an appropriate proportion of an 85% sodium percarbonate powder and water? What would the appropriate proportion be to facilitate this premise? Would the resulting reaction be safe...

Long story short I have some undiagnosed medical condition that I've been to 5 doctors for. I have a bunch of symptoms and I've learned through experimentation that excessive amounts of salty foods and the phosphoric acid in coca cola dramatically improves my symptoms. I know they are both...

Q : write products formed when polyester is heated with aqueous sodium hydroxide I know is hydrolysis , and the product will be alcohol and carboxylic acid ... but will the -OH in carboxylic acid replaces with -ONa or not ?? It say heated with , but doesn't mean react .. so does heated...

In this website, http://hyperphysics.phy-astr.gsu.edu/hbase/molecule/nacl.html , it says that it only takes 1.52 eV to create both ions. And when the two ions form come close to 0.94 nm, they have potential energy of -1.52 eV. Then is says that if the two neutral atoms come closer than 0.94 nm...

If you had a solution of the following zinc benzalkonium chloride glycerin hydroxyethylcellulose purified water sodium chloride sodium hydroxide what would be the purpose of the sodium hydroxide and would the solution be fine without it? What would you use for a safer substitute?

I am in need of the wavelength of the spectral lines of sodium but all I can find is the wavelength for the doublet. I am looking for the cyan coloured one that appears very close to 500nm but I cannot find the exact value anywhere. Would anyone be able to direct me somewhere? Thanks

In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the chloride ion. What I...

Does sodium reacting with water produces sodium hydroxide directly or produces sodium oxide first then hydroxide ?

Homework Statement The outermost electron in a sodium atom can be in these energy states: (1)-0.82 aJ, (2) -0,48 aJ, (3) -0.31 aJ 1 aJ= 10^{-18} J. When we study the spectrum of a sodium lamp, we see a yellow line. Use the above given energy states to determine the wavelength of this yellow...

Homework Statement In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated by about 0.28 nm. Calculate the electrostatic force between a sodium ion and a chloride...

Hi guys, Just got a question I'm a little stuck on and would love a push in the right direction Q) Using Hartree's theory calculate the degeneracy of the ground state of the Sodium atom. Its a previous exam question and I'm struggling to find much descriptive information about the topic...

Is the combination of an positive sodium with a negative chlorine neutral ? If so, what attracts and holds together other sodiums and chlorines to make a grain of salt ?

Hello. I am in need of some assistance in regards to what types of materials I should (and should not) use to contain the various corrosive substances listed in the title. As for the sodium hydroxide, it will be dissolved in water, almost to the point of saturation. I have never dealt with...

when looking at objects illuminated by sodium street lamps, I felt that they appeared somewhat different from what expected from my (somewhat naive) understanding of light. My knowledge is (and I'm talking only about visible light) that if something is red, and white light is shone upon it, this...

I need to test a system for liquid sodium wicking under high temperatures. The setup is as follows: Solid sodium pellets are placed in a tube which is then purged of oxygen (replaced with Argon). The tube is sealed and then heated to 300-400 degrees Celsius and agitated with a shaking...

I need to test a system for liquid sodium wicking under high temperatures. The setup is as follows: Solid sodium pellets are placed in a tube which is then purged of oxygen (replaced with Argon). The tube is sealed and then heated to 300-400 degrees Celsius and agitated with a shaking...

What's so unique about sodium chloride dissolving in H20? I mean, does the electronic, rotational, and vibrational degree of freedom differ from other compound dissolving in water? Any special characteristics in*its wave function or other properties?

Hi! I have a question regarding the applied voltage on NaI(Tl) detectors, how does the voltage effect the FWHM ( energy resolution)? For example, in a HPGe detector, the higher the applied voltage ( to some extent because of the leakage current) the more electron and holes are collected...

Hi Why do we have only sodium spectral lines in the sodium vapor lamp despite the very low concentration of sodium present in the lamp.

Consider the D1 and D2 transitions (3p --> 3s) of the sodium atom (Z = 11). How to calculate the magnetic field experienced by the valence electron arising from its orbital motion, given that the wavelength difference between the D lines? The formula that I have from lecture notes for...

So, a friend just picked up an antique chemistry set from the 50s, containing all sorts of interesting stuff - among it sodium ferrocyanide. Out of curiosity, can this photodecompose or react with an acid such as HCl or H2SO4 to produce hydrogen cyanide? Any risk of cracking it open without...

Hi guys, I recently read some stuff about satellites in space being able to project 3D images on to the sodium layer of our atmosphere about 60 miles above the Earth. Is this possible? Can the sodium layer potentially be used as a giant movie screen for projections? The stuff i read was about...

Homework Statement Predict the products and reaction mechanism when sodium phenolate reacts with carbon doixide, then acid. Homework Equations Sodium phenolate: Ph-ONa Carbon Dioxide: O=C=O The Attempt at a Solution The carbon atom in CO2 has a positive partial charge, so I expect an...

Question -- phenol and sodium hydroxide Hallo, I am searching the kinetic rate constant and the reaction enthalpy for reaction between phenol and sodium hydroxide. Does sbdy has those two values or knows where to find them? I tried google science directc etc... Thanks j

Hi chaps I wonder if anyone can help - I'm really stuck! I have purchased Sodium Percarbonate as I want to use it as Hydrogen Peroxide. I want to use it at 6% strength but do not know what ratio to mix it with water with! The data sheet is here...

Hi, Is this the correct equation for Citric acid reacting with Sodium hydrogen-carbonate. C6H8O7 + 3NaHCO3 -> 3CO2 + 3Na+1 + C6H5O73- Is there supposed to be H2O present also??

Evolution of Carbon dioxide from Sodium bicarbonate and potassium hydroxide??! Hi!:smile: Here’s a question my teacher asked me to solve about evolution of carbon dioxide, We know that carbon dioxide is obtained by the action pf dilute acids on any metallic carbonate or bicarbonate e.g...

Is Sodium Benzoate soluble in HCl, NaHCO3, and NaOH?As for HCl, I'm guessing benzoic acid is formed along with NaCl so I guess sodium benzoate is soluble in HCl? I honestly don't even know how to approach this. Thanks for the help in advance.

I reacted a solution of manganese (II) chloride with sodium hydroxide, however I am unsure of the reaction. Do the hydroxide ions displace the chloride ions or take a hydrogen from the water in the complex? Also after that reaction i added a few drops of hyrdogen peroxide, which caused a...

Homework Statement Explain why sodium azide has a lower solubility than hydrazoic acid in hexane. Homework Equations The Attempt at a Solution How to determine the solubility of solution in organic compounds? Thankyou

Homework Statement In a lab, i reacted NaHCO3 with HCl and put it under a steady flame and the reaction boiled. 1. What would indicate an excess of sodium bicarbonate instead of excess acid? is it precipitate? 2. Why was it necessary to add excess acid in the experiment? Is it so the NaHCO3...

A base is a chemical which reacts with an acid forming water and salt only. Is this definition of base true? If true, metal carbonates are not considered as base (carbon dioxide is also formed during neutralization which violates the definition). Hence, the solution of metal carbonates are...

Homework Statement Light from a laboratory sodium lamp has two strong yellow components at 589.5923 nm and 588.9953 nm. How far apart in the first-order spectrum will these two lines be on a screen 1.00 m from a grating having 10,000 lines per centimeter? Homework Equations Grating...

Hey All, In my cellular & tissue biology class our lecturer was talking about neurons. Basically he was explaining that the concentrations are as follows: Pottasium: higher inside the cell then outside. Sodium: higher outside the cell then inside. Chloride: higher outside the cell then...

A 25.0 ml sample of 0.150 M HNO2 is titrated with a 0.150 M NaOH solution. What is the pH at the equivalence point? The Ka of HNO2 is 4.50x10-4 What I can't get is the fact I don't know how much has already been titrated at the equivalence point. So it's difficult to know the total volume...

I don't need help with a numerical solution here - mostly a concept check. I've been asked to calculate the speed of sound in metallic sodium at T = 0 K using Fermi-Dirac statistics. After doing so, I get a speed of 14.5 meters per second, which is, well, really slow. I would have...

Homework Statement Determine the pH of0.15 M solution of sodium acetate, ka = 1.8 x 10^-5 The Attempt at a Solution Since there are no hydrogen ions that dissolve from sodium acetate, would I use the pH of water =7.0? Is the pH of water even affected by sodium acetate?

why sodium has two lines D1 and D2 ?

Homework Statement Estimate the strength of the magnetic field for which Zeeman splitting of the 3p energy levels in sodium equals the energy due to spin-orbit coupling Homework Equations The Attempt at a Solution I know the equations for spin orbit and the zeeman effect, and I...

Dear Users I need literature data on sodium zincate and lithitum zincate data help but don't reply with google.com tell me and books where i can find this with clear address

Homework Statement We break down the rxn of NaOH with HCl into putting solid NaOH pellets in water and determine the delta H value. Next, we mix aqueous NaOH with a HCl (aq) and determine the delta H. Then we mix solid NaOH pellets in HCl(aq) and measure the delta H. Can we say that the...

Hi, I was reading a research article on the effects of sodium iodoacetate on glycolysis (http://www.jbc.org/content/141/2/539.full.pdf"), and it got me thinking. What effect would iodoacetate have on the life span of any living cell? From the article, I understood that it aided in stopping...

Homework Statement Sodium Carbonate forms a number of hydrates of general formula Na2CO3.xH2O. A 3.01g sample of one of these hydrates was dissolved in water and the solution was made up to 250cm3. In a titration, 25cm3 portion of this solution required 24.3cm3 of 0.2 mol dm-3 hydrochloric...

i was working with a spectrometer and the aim of the experiment was to find the refractive index of a prism for various colors. i was asked specifically to use mercury vapor lamp and was insisted not to use sodium vapour lamp. why is it so?

Homework Statement A student performing this experiment titrates 1.390 g of KHP with an NaOH solution. The initial buret reading is 0.73 mL and the final buret reading is 22.38 mL. What is the molarity of the NaOH solution? Homework Equations Molarity= moles/Liters The Attempt at a...

How would I figure out the formula for Sodium Thiosulfate? I was asked that question on an exam and I knew sodium sulfate was Na2SO4, so I figured ok, thio means sulfur, so I'll just add another S like this: Na2S2O4 But my prof said Na2S2O3 was the right answer, and I have no idea how...