Question

A chemistry student needs 75 g of thiophene foran experiment. He has available 0.50 kg of a 29.3% w/w solution of thiophene in carbon tetrachloride.

Calculate the mass of solution the student should use. Ifthere's not enough solution, press the "No solution" button.

Answer 1

Answer: The mass of solution the student should use is 256 g

Step-by-step explanation:

Given : 29.3 % w/w which means that 29.3 g of solute is present in 100 g of solution

Thus 100 g of solution contains = 29.3 g of solute

0.50 kg or 500 g of solution contains =
`(29.3)/(100)* 500=146.5` g of solute (1kg=1000g)

146.5 g of solute is available in = 500 g of solution

Thus 75 g of solute is available in =
`(500)/(146.5)* 75 g=256g` of solution

Thus the mass of solution the student should use is 256 g