Calculate the concentration in % of a solution containing 150g MgBr2 in 500 mL of solution.
Question 96 options:
0.3% 

30% 

0.003% 

3.33% 
Solution: Option 'B' 30%
Because, we know percentage means parts per 100.
ie. Percentage of of MgBr2 means weight /mass of MgBr2 per 100 mL solution
In the question, it is given that
Total volume =500mL
Total amount of MgBr2 dissolved in 500mL = 150g
Therefore,
Percentage of MgBr2 in 500mL = (150/500) x 100
= 30%
Get Answers For Free
Most questions answered within 1 hours.