Ionic Equilibriums in Water
#2

We add 10.0 mL HCl 0.100 mol/L to 100.0 mL of the previous buffer solution (500.0 mL buffer solution containing 0.0300 mole of NaOAc and 0.0250 mole of HOAc). Calculate pH.

a

How many moles of NaOAc are present?

0.0060 mole

b

How many moles of HOAc are present?

0.0050 mole

c

How many moles of HCl are added?

0.00100 mole

d

What happens with the added acid? Write the reaction.

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e

How many moles of NaOAc are still present after that reaction?

0.0050 mole

f

How many moles of HOAc are still present after that reaction?

0.0060 mole

g

Calculate the pH.

4.67

Complete solution

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