Homework Help: chemisty

Posted by Clayton on Tuesday, April 3, 2012 at 3:38am.

What volume of HCl gas at 25◦ C and 1 atm should be bubbled into 375 mL of a 0.680 M aqueous solution of HClO4 so that the pH of the resulting solution is 0? Assume that all the HCl dissolves and that
the volume of the solution does not change with the addition of HCl.

chemisty - DrBob222, Tuesday, April 3, 2012 at 1:25pm
How many mols do we have in the HClO4. That's M x L = 0.680*.375 = about 0.250 but you need to be more accurate than that.
How much acid do you need to add to make pH = 0. pH = 0 means 1.0M H^+.
mols desired = M x L = 1.0 x 0.375L = 0.375 mols.

Difference is 0.375-0.250 = about 0.125 mols.
Use PV = nRT to solve for volume of HCl gas at the conditions listed.

Answer this Question

Related Questions

Chemistry - Need help with #2 & # 3 1. Record the pairs of data for pressure...
Chemistry - I'm trying to find the dry gas pressure of H2 in mmHg. The ...
General Chemistry I - A sample of gas occupies a volume of 59.9 mL. As it ...
chem - A spherical glass container of unknown volume contains helium gas at 25&...
chem - A spherical glass container of unknown volume contains helium gas at 25&...
chem - A spherical glass container of unknown volume contains helium gas at 25&...
Chemistry - 2KMnO4(aq)+16HCl(aq)->2MnCl2(aq)+5Cl2(g)+8H2O(l)+2KCl(...
AP Chem - Can someone please check these problems? 34. You fill a balloon with ...
Chemistry - Determine the atomic weight of X in the following compounds a)8g XH4...
chemistry - If the pressure on a 2.50 mL gas sample were doubled from 0.500 atm ...

For Further Reading

First Name:
School Subject:
Answer: