Concentration and gas volumes Quiz
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5 questions, one answer each
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1. A solution contains 10 g of solute in 2.0 dm³. What is its concentration?
- A. 20 g dm⁻³
- B. 0.2 g dm⁻³
- C. 5.0 g dm⁻³
- D. 12 g dm⁻³
2. How many moles are in 250 cm³ of a solution of concentration 0.20 mol dm⁻³?
- A. 0.050 mol
- B. 0.80 mol
- C. 50 mol
- D. 0.0050 mol
3. What is the volume of 0.50 mol of a gas at room temperature and pressure?
- A. 48 dm³
- B. 0.021 dm³
- C. 24 dm³
- D. 12 dm³
4. In a 1 : 1 titration, 20.0 cm³ of 0.100 mol dm⁻³ acid neutralises 25.0 cm³ of alkali. What is the concentration of the alkali?
- A. 0.125 mol dm⁻³
- B. 0.0800 mol dm⁻³
- C. 0.0500 mol dm⁻³
- D. 0.800 mol dm⁻³
5. What is 500 cm³ in dm³?
- A. 0.500 dm³
- B. 5.00 dm³
- C. 50.0 dm³
- D. 0.0500 dm³