Question

A student completes a titration by adding 12.0 milliliters of NaOH(aq) of unknown concentration to 16.0 milliliters of 0.15 M HCl(aq). What is the molar concentration of the NaOH(aq)?

1)5.0 M
2)0.20 M
3)0.11 M
4)1.1 M

Answer 1

12×C(NaOH)=16×0.15

C(NaOH)=(16×0.15)÷12=0.2

Answer: 2) 0.20M