Practice Mass By Volume Percentage (w/v) (1.2.3) - Solutions

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does a 15% (w/V) solution of ethanol indicate?
Show hintHide hint
Remember, w/V means weight per volume.
Question 2.
How would you state a 12% (w/V) solution of glucose?
Show hintHide hint
Use the definition of w/V.
3Question 3.
What is the formula for mass by volume percentage?
- (mass of solute/volume of solution)*100
- (volume of solute/mass of solution)*100
- (mass of solution/mass of solute)*100
Show hintHide hint
Think about the definition of mass by volume.
4Question 4.
True or False: A 20% (w/V) solution contains 20 grams of solute in 200 mL of solution.
- True
- False
Show hintHide hint
Recall what the percentage signifies.
Question 5.
You have a 25% (w/V) solution of NaCl. If you take 200 mL, how much NaCl is that in grams?
Show hintHide hint
Apply the w/V definition and calculate based on your answer.
Question 6.
You need a 12% (w/V) solution for an experiment. How much solute would you need to prepare 1 L of this solution?
Show hintHide hint
Convert your units carefully for liters.

5 more questions in this section. Enroll free to practise them all.