A solution contains 2 g of solute and 0.01 mol of the solute. If the solute is non-dissociated, what is its molar mass?
Answer and explanation
Correct answer: 200 g mol^-1
Molar mass is defined as the mass of a substance divided by the amount of substance in moles: M = m/n. Here, m = 2 g and n = 0.01 mol. Therefore, M = 2/0.01 = 200 g mol^-1. The statement that the solute is non-dissociated is not needed for this direct calculation because the actual number of moles is already provided. Therefore, option C is correct.
Frequently asked questions
What is the correct answer to this question?
200 g mol^-1
Why is this the correct answer?
Molar mass is defined as the mass of a substance divided by the amount of substance in moles: M = m/n. Here, m = 2 g and n = 0.01 mol. Therefore, M = 2/0.01 = 200 g mol^-1. The statement that the solute is non-dissociated is not needed for this direct calculation because the actual number of moles is already provided. Therefore, option C is correct.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Some Basic Concepts of Chemistry. Topic: Mole concept and molar mass.
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