Question

2 g of copper sulphate is dissolved in 30 g of water. Calculate the percentage

amount of the copper sulphate salt in the solution. or​

Answer 1

Explanation:

Amount of solute(Cu) =2g

Amount of solvent(H2O)= 30g

Mass percentage= Mass of solute/ Mass of solution *100 %

=> 2/ 2+30 * 100 %

=> 2/32*100 %

6.25% (ANSWER).

Answer 2

Given:

2 g of copper sulphate is dissolved in 30 g of water.

To find:

% amount of copper sulphate in solution?

Calculation:

$\rm \% \: amount = \dfrac{mass \: of \: solute}{mass \: of \: solution} \times 100\%$

$\rm \implies\% \: amount = \dfrac{mass \: of \: copper \: sulphate}{mass \: of \: solution} \times 100\%$

$\rm \implies\% \: amount = \dfrac{2}{30 + 2} \times 100\%$

$\rm \implies\% \: amount = \dfrac{2}{32} \times 100\%$

$\rm \implies\% \: amount = 6.25\%$

So, percentage amount of CuSO4 in solution is 6.25 %.