Question

90ml of hno3 is mixed to form a 200 ml solution. find v/v% for water.

(1) 45%
(2)90%
(3)55%
(4)10%​

Answer 1

Answer:

Given,

Vol. of solute (HNO3) = 90 ml

Vol. of solution (HNO3 + H2O) = 200 ml

Vol. of water in the solution = 200 - 90 ml = 110 ml

Vol/Vol% of water = 110ml/200ml × 100 = 0.55 × 100 = 55 %

Hence, correct option is (3) 55%