Question

What amount of NaOH is dissolved in water to prepare a 100mL solution of 50%
( mass by volume) strength.​

Answer 1

Let the mass of NaOH be x.

Volume of solution = 100ml = 100cm^3

∴ concentration of solution (mass by volume) strength =>

$\frac{x}{100}$ ×100=50

=> x=50 Therefore, 50g of NaOH is dissolved.

Arre bhai jaldi likh le, best of luck (if u r giving the exam)

From Devang

Answer 2

Answer:

Let the mass of NaOH be x.

Volume of solution = 100ml = 100cm^3

∴ concentration of solution (mass by volume) strength =>

\begin{gathered}\frac{x}{100} \\\end{gathered}

100

x

×100=50

=> x=50 Therefore, 50g of NaOH is dissolved.