Hcl Definition and 145 Threads

Homework Statement What effect, if any, would using nitric acid instead of hydrochloric acid in the reaction NaOH(s) + HCl(aq) --> NaCl(aq) + H2O(l) have on the enthalpy changes measured in an experiment? Homework Equations N/A The Attempt at a Solution I have no idea. Some...

Homework Statement im given an experiment on reactivity series and required to write net ionic equation in the results.. I am kinda stuck in this reaction.. between this 3 metal.. iron, copper, and zinc.. reacting with nitric acid.. Homework Equations the reaction was carried out with...

A hydrogen bond is the attractive force between one electronegative atom and a hydrogen covalently bonded to another electronegative atom. Doesn't this apply to hydrochloric acid?

Hi, well my friend is in the final year graduation and he is working on a project a part of it is trying to detect the pH of a certain compound exist in acidic HCl solution, this compund don't remember its name for recent but it has the amino 'NH2" group this compund is in solution of HCL and...

rust in test-tubes of HCl FeO or Fe3O4?? I am doing experiments on steel nails in HCl solutions with a pH of about 1.5 - 2. The rust is black in colour, and is not attached to the surface of the nails. It stays at the bottom of the test-tube. Is this FeO or Fe3O4. Why is it that the rust I am...

1. I need to know which compound out of Copper Sulfate, sodium chloride, potassium iodide and magnesium sulfate will be the best catalyst for the reaction between ALuminum metal and Hydrochloric acid. 2. The chemical equation is : 2Al(s) + 6HCl(aq) -> 2AlCl3(aq) + 3H2(g) 3. I...

Homework Statement The volume was which was 50.0mL. Homework Equations The Attempt at a Solution

Hi Everyone! Hopefully someone can help me out with this question...Why is aniline soluble in aqueous hydrochloric acid, but acetanilide is not? Is it because aniline has a lone pair on the nitrogen that is more available to react? The lone pairs in acetanilide are too tied up with...

Explain the following observations a) HCl is a stronger acid than H2S; etc... I just need to know how to find this out, I read through the chapter but it didn't explain it all that well, and the notes my teacher gave me didn't go over it at all.

Chemistry pH problem help please NaOH and HCl Calculate the pH after the following total volumes of .32M HCl have been added to 25 mL of 0.16M NaOH a. 0 mL c. 12.4 mL e. 12.6 mL b. 1 mL d. 12.5 mL f. 15.0 mL A. i have answered correctly but i...

Homework Statement What
 is 
the 
wavelength 
of 
the 
emitted
 photon 
when
 HCl
 de‐excites 
from
 the
 first vibrational 
state? Well, I had to solve for the energy of the first vibrational state in the question before, assuming that it behaved like a harmonic oscillator using the...

I've been trying to remove a benzyl protecting group of a phenol and also remove a CBZ protecting group on a secondary amine by standard hydrogenation of the material with 10% Pd on Carbon. My protected molecule is very lipophilic and soluble in DCM. The reason I added methanol was because the...

Cl gets similar electronegativity as N, NH3 is a hydrogen bond, but HCl isn't, why? N and Cl also gets lone pair electrons! N and Cl is more or less the same. Could anybody please answer this question? Okay, if I rephrase it, it will become why the bonding between H and Cl isn't hydrogen...

Homework Statement An acid and a base is supposed to form a salt and water during a neutralization reaction such as NaOH + HCl --> NaCl + H2O. However, based on Brønsted–Lowry acid-base theory, shouldn't NaOH become NaH2O or something like that after accepting an H+ ion from HCl since the base...

Homework Statement To 25.000 mL of distilled water in a 50 mL beaker, you add exactly 19 drops of 0.100 M HCl and swirl to mix. If exactly 20 drops of HCl are required to make 1.000 mL Homework Equations Calculate molarity of the diluted HCl and pH of the diluted HCl The Attempt...

Homework Statement Calculate the average ratio of grams of hydrogen gas produced per gram of magnesium. This is part of a lab in which I know how many grams of magnesium were used and how many ml of hydrogen gas was produced Homework Equations Mg (s) + 2 HCl ---> MgCl2 + H2 The...

Calculate the volume of 3.0 mol HCl required to react completely with 10.0g of Na2CO3. Im confused about the "volume". What do they mean ? Do I have to find the mass of HCl then convert it into a volume?

Homework Statement This is not a problem, per se, because it is part of my Lab. We're calculating the standard enthalpy change of formation for solid Ammonium Chloride. To do this, we're using four separate rxns, and totaling their individual standard enthalpy change of formations. For two...

What is the specific heat capacity of HCl when given the following information: Volume: 50mL Initial Temp: 20 *C Final Temp: 26* C What is the heat measurement in Joules as well? What is the specific heat capacity of HCl when given the following information: Volume: 100mL Initial Temp...

Hi everyone! I just have a quick question. If I took NaCl and put it in a 1.00 M HCl solution, would the NaCl dissolve? Thanks

I have a solution which contains unknown amount of dissolved ferric chloride (FeCl3) and hydrochloric acid. Can I use the titration method with NaOH to determine the concentration of HCl? I was concerned since dissolved FeCl3 is also acidic, and the fact that NaOH will try to neutralize it...

i did an experiment involving gas diffusion through a glass tube. HCl was on one side of the tube, while NH3 was on the other side. it took about 5 minutes for the gases to meet in the middle of the tube and form a precipitate. but the mean velociries of the HCL and NH3 gas molecules at...

Homework Statement can anyone answer these questions what happens if you add HCl to NaHCO3 also what happens if you add HCl to magnesium and HCl to burnt magnesium what do these tests mean? also how many significant figures can you obtain with the centigram balance and with the electronic...

Homework Statement Explain why hydrogen fluoride (HF) has a higher boiling temperature than hydrogen chloride (HCL) even though HF has a lower molecular weight. Attempt OK so from the looks of it I think that the bonding that bonds the H to the Cl and the H to the F is polar covalent. So...

was asked to consider the solubility for hydrated calcium sulfate in HCl. The principal acid my proffesor had posted for the solution was [ CaSO4(hyrdrated) + HCl <--> H30^+ + Ca^2+ + SO4^2- ]. I guess what I'm asking is what happened to the Cl^- and why isn't it reacting with Ca^2+ to produce...

What are the products when Pepto-Bismol and HCl react together. I know a salt and water. But what exactly? I believe pepto bismol is C7H5BiO4 So C7H5BiO4 + HCl --> ?

Question A buffer solution is prepared by mixing 600.0 ml of 0.600 M HClO and 400.0 ml of 1.00 M NaClO. Calculate the pH of the solution after 40.0 ml of 3.00 M HCl is added to the buffer. For HClO, Ka = 3.0 X 10^-8. Work so Far A buffer solution os prepared by mixing 600.0 ml of 0.600 M...

I have 1 bottle of HCL 37% Concentration with 2.5L Volume. Given the MW is 36.46g/mol. How to calculate the molarity of the HCL in the bottle? as i only need to prepare 1M of HCL? :confused: no density and molarity given in d label

Hi.. Im trying to figure out what the affect of HCl on a magnesium strip at different concentration levels has? I can't figure out a 'scientific' response and therefore can't formulate a hypothesis :/ Any help will be appreciated.

Homework Statement Calculate the pH of the solution a) 23.0 ml of 6.29 M HCl is added to 160.0 ml of distilled water Homework Equations pH = -log [H] Kw= [H][OH] Kw = 1 x 10^-14 The Attempt at a Solution For part a) I found the no.of moles Of HCl as 0.14467mol and from...

Hi, I completed a Grade 12 experiment and now I am doing some calculations about it but I am confused. Here is the question: "Write the net ionic equation for each reaction, and note the value of ΔH for each reaction. e.g. H+(aq) + OH-(aq) --> H2O(l) ΔH = -45 kJ/mol HaOH I had three...

Why it would be unwise to almost completely fill a test tube with HCL solution before adding a piece of metal? Is it because it's a acidic solution? Thanks

How many milliters of .248 M HCl are needed to react with 1.36g of zinc to produce hydrogen gas

Hello, I work on a project on the recovery of gases HCl 33 % which escape during the load of this last one in tanks. I want to know if you can help me or propose me a solution for the calculation of this quantity and if you have an idea of a method to get back them. or any information about the...

Hello, I work on a project on the recovery of gases HCl 33 % which escape during the load of this last one in tanks. I want to know if you can help me or propose me a solution for the calculation of this quantity of gas and if you have an idea of a method to get back them. or any information...

I am learning, on my own, with the help of textbooks kindly given to me at Christmas by my grandfather and my own experimenting, some more advanced chemistry than what I studied in Grade Seven. Partly as preparation for High School, and partly for my own knowledge. However, I ran across some...

Hey Can someone explain to me how pure hcl is covalent, and what happens when it is dissolved in water? I know it conducts electricity. But I am a bit lost

how can i make this buffer? i know how to make Tris- HCl buffer, but how about this one? what is the acid and base here? 25 mM Tris-phosphate (pH 7.8) any ideas? thanks.

Why is HCl called hydrochloric acid, not just "chloric" acid? I mean, we don't say hydronitric acid, nor do we say hydrosulfuric acid. But then why is HCl called hydrochloric acid, not just chloric acid? (i mean, we do add the hydrogen for acid) My guess is that this is so because the...

How to answer the question: why the pink colour (from 2-3 phenolphthalein indicator) obtained at the end point of the titration in this experiment gradually disappears over time? :confused: Is it because of that the water will reverse back to the form of H+ and OH-?

How do u balance Mg + HCl? is it MgCl + H?

Im a beginner in chemistry and i just did a chemistry lab with my class on titration. Na2CO3(s) + 2HCl(aq)==>2NaCl(aq) + CO2(g) + H2O(l) Can any1 tell me what the mol ratio is for this equation?

Hi. I was reading how to make chlorine gas from HCl and KMnO4. KMnO4 is added to a round bottom flask and then HCL is added via an addition funnel at a pretty slow rate. THe gas is directed into a container with water (through a tube), a bubbler he calls it, it has an in tube and an out tube...

Hi. Certain drugs need to be freebased, can someone explain this (the meaning of freebaing)? Why would you want to freebase? I believe that when they are freebased they form a salt of HCL or something, what's with that? Is it analogous to hydrated salt, where a compound can hold like 2 moles...

What volume of .273 Molarity HCl is required to react completely with 50.00 mL of .167 Molarity of Barium Hydroxide? 2 HCl + Ba(OH)2 -> 2 H20 + BaCl -------------------------------------------- I am confused about this problem because my profe told me that you need to double the amount...