Question

2g NaOH in 50ml solution. Write down the concentration of the solution in g/L and mol/L.

Answer 1

,HEY mate here is your answer.

Hope it helps you.

^_^

Answer 2

Answer:

Concentration in g/L = 40 g/L

Concentration in mol/L = 1 mol/L

Explanation:

Since we know that the molar mass of sodium hydroxide is = 40

given mass of sodium hydroxide = 2 g

Volume of solution = 50 ml = 0.05 litre.

$No.\ of\ moles\ of\ NaOH = \dfrac{Given\ mass}{Molar\ mass}$ = $\dfrac{2}{40} =0.05\ moles$

$Concentration\ in\ g/L$ = $\dfrac{Given\ mass}{volume\ of\ solution} = \dfrac{2}{0.05} =40 g/L$

$Concentration\ in\ mol/L = \dfrac{No.\ of\ moles}{volume\ of\ solution} = \dfrac{0.05}{0.05} =1 mol/L$