A 25ml solution of 0.5 M NaOH is titrated until neutralised into a 50mL sample of HNO3.what was the concentration of the HNO3?

Answer 1

To find the concentration of HNO3, we can use the equation:

M1V1 = M2V2

Where:
M1 = concentration of NaOH solution
V1 = volume of NaOH solution
M2 = concentration of HNO3
V2 = volume of HNO3 solution

Given:
M1 = 0.5 M
V1 = 25 mL = 0.025 L
V2 = 50 mL = 0.05 L

Plugging the given values into the equation:

0.5 M x 0.025 L = M2 x 0.05 L

0.0125 = M2 x 0.05

M2 = 0.0125 / 0.05

M2 = 0.25 M

Therefore, the concentration of HNO3 is 0.25 M.