Question

Find the activity coefficient of h+ in a solution contain .010m hcl plus .04m kclo4

Answer 1

Answer:

Explanation:

Step 1: Use 1/2(cz^2) to find u (ionic strength)

For this example it would be u=0.05

Step 2: plug u into the activity coefficient equation (-0.51)z^2(sqrt(u)) / (1+ (a*(sqrt(u))/3-5) where a is the size of H ion (from table 7-1). Be sure to take the anti-log of your answer to get the activity coefficient! log(gamma)= -0.06867 so gamma= 0.86

You can use this activity coefficient and [H+] to find pH...

pH= -(log(0.010M) +log(0.86))

WAR EAGLE!