Chemistry - Concentration Terms Question with Solution | TestHub

Weight of KOH in 1 litre solution $=6.9\times 56=\frac{30}{100}\times$ weight of solution

$\begin{array}{rl}& \therefore \text{ weight of solution }=\frac{6.9\times 56}{0.3}=1288\mathrm{g}\\ & \therefore \text{ density of solution }=\frac{1288}{1000}\mathrm{g}/\mathrm{ml}=1.288\mathrm{g}/\mathrm{ml}\\ & \therefore \text{ density of solution }=\frac{1288}{1000}\mathrm{g}/\mathrm{ml}=1.288\mathrm{g}/\mathrm{ml}\end{array}$