Some Basic Concepts Of Chemistry Question 145

Question: 15 grams of methyl alcohol is dissolved grams of water. What is the mass percent methyl alcohol in solution?

Options:

A) 30%

B) 50%

C) 70%

D) 75%

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Total mass of solution = (15 + 35) gram = 50 gram Mass percentage of methyl alcohol $ =\frac{\text{Mass of methyl alcohol}}{\text{Mass of solution}}\times 100 $

$ =\frac{15}{50}\times 100=30% $



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