47 In a titration, 20.0 milliliters of a 0.150 M NaOH(aq) solution exactly neutralizes 24.0 milliliters of an HCl(aq) solution.

Question

horsena [70]

2 years ago

11

47 In a titration, 20.0 milliliters of a 0.150 M NaOH(aq) solution exactly neutralizes 24.0 milliliters of an HCl(aq) solution.

What is the concentration of the HCl(aq) solution?(1) 0.125 M (3) 0.250 M
(2) 0.180 M (4) 0.360 M

Chemistry

1 answer:

sasho [114] · Answer 1 · 2022-02-01T11:22:56+03:00

The answer is (1) 0.125 M. The reaction equation is NaOH + HCl = NaCl + H2O. So the mol number of NaOH and HCl is the same. So suppose the concentration of HCl is x, we can have equation: 20*1.15=24*x. So x= 0.125 M. (M means mol/L, but if we use the same unit at both side of the equation, it is ok.)