Skip to content

Course home

Sign up

Amount of substance

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455
Question 30

A sample of hydrogen sulfide (H2S\text{H}_2\text{S}H2​S) has a volume of 50 cm350\text{ cm}^350 cm3 at room temperature and pressure. The sample is burned completely in 1500 cm31500\text{ cm}^31500 cm3 of air. The final mixture is cooled to room temperature and pressure. The equation for the complete combustion is: \

2\text{H}_2\text{S}(g) + 3\text{O}_2(g) \rightarrow 2\text{SO}_2(g) + 2\text{H}_2\text{O}(l){\char"24}$ Calculate the total volume of gas in the final mixture. Assume that air contains $21\%$ by volume of oxygen.
[4]
Markscheme

Amount of substance Questions

  1. A Level
  2. /Chemistry
  3. /Amount of substance

79 exam-style questions on AQA A Level Chemistry Amount of substance, covering Relative atomic mass and relative molecular mass, The mole and the Avogadro constant, The ideal gas equation, Empirical and molecular formula, and Balanced equations and associated calculations. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank