Question
Chemistry Question on Solutions
The chemistry teacher asked the students to prepare 20% w/w solution of urea [NH2CONH2] in water. Which one of the following solution does not conform to the required composition?
A
6g urea dissolved in 24g water
B
20g urea dissolved in 80g water
C
10g urea dissolved in 40g water
D
4g urea dissolved in 16g water
E
15g urea dissolved in 30g water
Answer
15g urea dissolved in 30g water
Explanation
Solution
The correct option is (E) : 15g urea dissolved in 30g water