Saturday
August 2, 2014

Homework Help: chem

Posted by Lena on Thursday, July 23, 2009 at 10:54pm.

Calculate the [h3o+] and [oh-], pH and the percent dissociation for both 0.25 mol/L HCl and 0.25 mol/L HCN.

0.25 mol/L HCL
[H+] = 0.25 mol/L
[OH-] = 1 x 10^-14 / 0.25 = 4 x 10^-14
pH = 0.60
% dissociation = ?
( I dont know how to figure out percent dissociation)

For the HCN I thought I would do the same thing since there is also 0.25 mol/L of it but in the solution there is the number 1.2 x 10^ -5 and I dont understand where it came from. Could someone please help? thanks :)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

CHEM - Which of the following mixtures will result in the formation of a buffer ...
chemistry - Which of the following mixtures will be a buffer when dissolved in a...
Chemistry(Please check) - Which of the following mixtures will be a buffer when ...
chemistry - Which of the following mixtures will result in the formation of a ...
chem - When hydrochloric acid reacts with magnesium metal, hydrogen gas and ...
Chemistry - Mg(s) + 2 HCl(aq) --> MgCl2(aq) + H2 (g) DeltaH= -4.6x10^2 kJ How...
Chemistry - a. Calculate the delta H, delta G, and equilibrium constant for the ...
AP Chemistry - The equilibrium constant for thermal dissociation of F2 F2(g)<...
Chemistry - I need help I can't seem to get the right answer. Please help! 1/2 ...
CHEMISTRY!! NEED IMMEDIATE HELP PLEASE!!! - a. Calculate the delta H, delta G, ...

Search
Members