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Concentration of Solutions MCQ1

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Questions and Answers

What is the unit of concentration that represents the number of moles of solute per litre of solution?

g/L

mol/L (correct)

ppm

w/v

A 10% w/v solution contains how many grams of solute in 100ml of solution?

5 g

1 g

20 g

10 g (correct)

If a solution has a concentration of 5 ppm, how many grams of solute are present in 1000 litres of solution?

0.5 g

0.05 g (correct)

5 g

50 g

A 15% w/w solution contains how many grams of solute in 100g of solution?

15 g Signup and view all the answers

What is the concentration of a solution that contains 20 grams of solute in 200ml of solution?

10% w/v Signup and view all the answers

A 12% w/w solution has how many grams of solute in 250g of solution?

30g Signup and view all the answers

What is the difference between a solution with a concentration of 2M and a solution with a concentration of 2g/L?

One is a molar concentration and the other is a mass concentration. Signup and view all the answers

What is the concentration of a solution that contains 12 grams of solute in 120ml of solution?

10% w/v Signup and view all the answers

A 20% w/w solution is diluted to 10% w/w. What is the mass of the solute in 100g of the diluted solution?

10g Signup and view all the answers

A 5% v/v solution contains 25ml of solute in 500ml of solution. What is the volume of the solute in 100ml of solution?

5ml Signup and view all the answers