of a solution is diluted to . What is the new molarity (in M)?
Answer and explanation
Correct answer: A. 1/2
**
- Step 1: In dilution problems, use the relation .
- Step 2: Express : .
- Step 3: Substitute the known values: .
Answer
1/2.
Why not the others: '200' inverts the dilution ratio (), incorrectly predicting a concentrated solution; '10' is the initial undiluted molarity before addition of water; '5' arbitrarily halves the concentration without using the actual volume ratio.
Practise more Solutions.
Free questions with an explanation for every one, and full timed JEE Main mock tests.
More Solutions questions
- mol of a solute is dissolved to make L of solution. What is the molarity (in mol/L)?
- mol of a solute is dissolved to make L of solution. What is the molarity (in mol/L)?
- mol of a solute is dissolved to make L of solution. What is the molarity (in mol/L)?
- mol of a solute is dissolved to make L of solution. What is the molarity (in mol/L)?
- mol of a solute is dissolved to make L of solution. What is the molarity (in mol/L)?
- of a solution is diluted to . What is the new molarity (in M)?