If 30 grams of KBr is dissolved in 100 g of water at 50 degrees celsius, how many more grams need to be added to make a saturated solution?

Question

A. 50

B. 60

C. 80

D. 120

Answer 1

Look up the solubility of KBr at 50ºC. I find it to be 80 g KBr/100 g H2O

Since you have only 30 g KBr in 100 g H2O, you'd need to add 50 g KBr to reach saturation. So, answer would be (A) 50