Question

find molarity question no 1

Answer 1

given-
20gram NaOH
250 ml water.

$molarity = \frac{no.of \: moles \: of \: solute}{volume \: of \: solution \: (in \: litres)} \\ = \frac{ \frac{20}{40} moles}{ \frac{250}{1000}l } \\ = \frac{ \frac{1}{2} }{ \frac{1}{4} } \\ = 2 \: molarity$
2M