Question

A $40.0mL$ sample of $0.100MHN{O}_3$ is titrated with $0.200MNaOH$.
Calculate the volume required to reach the equivalence point.

• A. $10.0mL$
• B. $20.0mL$
• C. $30.0mL$
• D. $40.0mL$

Answer 1

The correct option is B $20.0mL$

At equivalence point, moles of acid is equal to moles of base.

$\therefore$ (Molarity of acid) $\times$ (Volume of acid) $=$ (Molarity of base) $\times$ (Volume of base)

$\therefore$ Volume of base $=\frac{0.100\times 40}{0.200}=20$ $mL$

$\therefore$ Volume of base required to reach equivalence point $=20$ $mL$.