This quiz pulls questions at random from the entire 1100+ question-bank

1. State the colour of phenolphthalein in acidic and alkaline solutions

Question 1 of 10

2. What method would be followed to prepare a sample of pure, dry lead (II) sulfate?

Question 2 of 10

3. What will happen to the equilibrium position when the temperature is decreased? Give a reason for your prediction. CO(g) + 2H₂(g) ⇋ CH₃OH(g) ΔH = –91 kJ mol⁻1

Question 3 of 10

4. Use Q=mcΔT and c=4.18J/°C/g. 25cm³ of sulfuric acid is put into a boiling tube. The starting temperature is 21°C. A spatula of iron filings is added. After a while the temperature reaches 33°C. What is the total heat energy change?

Question 4 of 10

5. Which temperature is used to produce ethanol in a industry?

Question 5 of 10

6. A sample of hydrogen chloride gas has a volume of 48 dm³. What amount of hydrogen chloride is this?

Question 6 of 10

7. Give a simple reaction can be used to investigate the effect of changing surface area on the rate of reaction

Question 7 of 10

8. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of chlorine (Cl₂), how many electrons should be shown in areas 1, 2 and 3?

Question 8 of 10

9. What will happen to the rate of reaction when a catalyst is added? A (g) + B (g) ⇋ C (g) (-∆H)

Question 9 of 10

10. What does the following diagram represent?

Question 10 of 10