Question

The molarity of a solution prepared by adding 7.1 g of Na₂SO₄ (formula weight 142 amu) to enough water to make 100 ml volume is

(a) 2.0 M

(b) 1.0 M

(c) 0.5 M

(d) 0.05 M

Answer 1

Correct option is: (c) 0.5 M