Question

An aqueous solution with NaOH 10 g/L at the rate is 100 L/min and an organic compound with no NaOH at the rate 50 L/min were put into an extraction machine and produced aqueous solution with NaOH 1 g/L, what is the amount of NaOH in organic compound after extraction?

(a) 2 g/L

(b) 5 g/L

(c) 9 g/L

(d) 15 g/L

I have been asked this question by my school teacher while I was bunking the class.

I'd like to ask this question from Material Balance without Reaction-II in division Material Balances without Reaction and Material Balances Involving Reactions of Chemical Process Calculation

Answer 1

The correct answer is (c) 9 g/L

Best explanation: NaOH balance equation, 100(10) + 50(0) = 100(1) + 50(x).