Question

Calculate the amount of water required to prepare 1000g of solution, the percentage of solution by mass is 5%.(950g)​

Answer 1

Explanation:

Mass percent = mass of solute / mass of solution.

Where mass of solution = mass of solute + mass of solvent

Here mass of solution = 500g

Mass percent = 2.5 %

Let the mass of solute be x.

Then 2.5% = x/500

- x = 12.5g

Hence mass of sugar is 12.5 g

.. mass of solvent = mass of solution - mass of solute

.. mass of solvent = 500g - 12.5g

» mass of solvent = 487.5 g

Hence 487.5 g of water is required to prepare 500 of 2.5% sugar solution

Answer 2

Answer:

950g

Explanation:

From the formula

mass %= solute / solution*100