Chemistry

Problem

35.0\,\text{mL}

sample of

0.0500\,\text{M}

\mathrm{Na_2CO_3}

is titrated with

0.100\,\text{M}

HCl. The carbonate ion reacts completely according to

\mathrm{CO_3^{2-}+2\,HCl\rightarrow CO_2+H_2O+2\,Cl^-}.

What volume of the acid is needed to reach the equivalence point? a)

17.5\text{ mL}

35.0\text{ mL}

52.5\text{ mL}

8.75\text{ mL}