Question 1
How many grams of KBr are required to make 350. mL of a 0.115 mol L
-1 KBr aqueous solution?
◦ 0.338 g
◦ 3.04 g
◦ 4.79 g
◦ 40.3 g
Question 2
How many moles of ethylene glycol must be dissolved in 500 g of water (
Kf = 1.86 °C
m-1) to lower the freezing point to -5.00 °C?
◦ 18.6 mol
◦ 2.69 mol
◦ 0.268 mol
◦ 3.73 mol
◦ 1.34 mol