Question

The titration of 20.0 mL of phosphoric acid of unknown concentration requires 10.7 mL of 0.110 M NaOH solution. What is the molarity of the phosphoric acid?

Answer 1

0.0589 M

Step-by-step explanation:

Using M1*V1=M2*V2 we can solve.

M1 is unknown

V1 is 20.0 mL

M2 is 0.110M

V2 is 10.7 mL

10.7*0.110= 1.177 then divide by 20.0mL and your answer should be 0.05885M but applying correct significant figures your answer is 0.0589