Question

A solution is prepared by dissolving 49.3 g of KBr in enough water to form 473 mL of solution. Calculate the mass % of KBr in the solution if the density is 1.12 g/mL.

Answer 1

Answer:

9.31%

Explanation:

We are given that

Mass of KBr=49.3 g

Volume of solution=473 mL

Density of solution =1.12g/mL

We have to find the mass% of KBr.

Mass =$volume\times density$

Using the formula

Mass of solution=$1.12\times 473=529.76 g$

Mass % of KBr=$\frac{mass\;of\;KBr}{Total\;mass\;of\;solution}\times 100$

Mass % of KBr=$\frac{49.3}{529.76}\times 100$

Mass % of KBr=9.31%

Hence, the mass% of KBr=9.31%