Question

If we have 6% w/w urea solution with density 1.060 g/mL, then its strength in g/L is: -
(A) 6.36
(B) 63.6
(C) 6
(D) 0.64​

Answer 1

Answer ⇒ Option (B). is correct.

Explanation ⇒ 6% (w/w) means that 6 gram urea is desolved in 100 grams of the solution.

Now, Density of solution = 1.060 g/mL.

∴ Volume of solution = Mass of solution/density of solution.

∴ Volume of solution  = 100/1.060

∴ Volume of solution  = 94.34 mL. = 0.09434

Now, Strength = mass of urea/Volume of solution(in L)

∴ Strength = 6/0.09434

∴ Strength = 63.59

∴ Strength ≈ 63.6 g/L.

Hence, Option (B). is correct.

Hope it helps.

Answer 2

Answer:

Explanation:

63.6