Chemistry

Problem

A student mixes

250.\,\text{mL}

1.00\,\text{M}

NaOH with

100.\,\text{mL}

0.70\,\text{M}

_2

_4

. After the reaction

2\,\text{NaOH}(aq)+\text{H}_2\text{SO}_4(aq)\rightarrow \text{Na}_2\text{SO}_4(aq)+2\,\text{H}_2\text{O}(l)

is complete,

8.00\,\text{g}

of Na

_2

_4

is collected. What mass of NaOH remains unreacted in the solution? a)

7.2\,\text{g}

4.4\,\text{g}

0.0\,\text{g}

5.5\,\text{g}