Question

What would be the mass percent of a NaOHsolution in which 11.6g of NaOHwere completely dissolved in 238.4g of water?

Answer 1

Answer:

4.54 % NaOH

Explanation:

$\text{Mass percent} = \dfrac{\text{Mass of component}}{\text{Total mass}} \times 100 \, \%$

Data:

Mass  of NaOH     =   11.6 g

Mass of water      =   38.4 g

Mass of solution = 250.0 g

Calculation:

$\text{Mass \% NaOH} = \dfrac{\text{11.6 g NaOH}}{\text{250 g solution}} \times 100 \% = \textbf{4.54 \% NaOH}$