Explain how sulfur is changed into sulfur dioxide.
Write an equation for converting sulfur into sulfur dioxide.
What does the symbol $\rightleftharpoons$ mean?
State the name of the catalyst for this reaction.
State why a catalyst is used.
If the temperature were raised above $450\,^{\circ}\text{C}$, what would happen to the quantity of sulfur trioxide made? Explain your answer.
Suggest why a temperature below $450\,^{\circ}\text{C}$ is unsuitable.
If the pressure were increased to above 1-2 atmospheres, what would happen to the quantity of sulfur trioxide made? Explain your answer.
What must be added to sulfur trioxide to make oleum?
Write a chemical equation for turning sulfur trioxide into oleum.
What is added to oleum so that sulfuric acid is produced?
Write a chemical equation for turning oleum into sulfuric acid.
State one use of sulfuric acid.
What does the term strong acid mean?
Describe how you could show that a $1\,\text{mol dm}^{-3}$ solution of benzenesulfonic acid is a strong acid.
Write an equation for the reaction between benzenesulfonic acid and sodium carbonate, $\text{Na}_2\text{CO}_3$.