Chemical Equations
16 past-paper questions on Chemical Equations · examined 2020–2024.
20244 questions
Construct the symbol equation for the reaction of calcium carbide with water to form ethyne and calcium hydroxide.
Solid zinc sulfite reacts with dilute nitric acid to give sulfur dioxide gas, an aqueous zinc salt and a colourless liquid. Construct the symbol equation for this reaction. Include state symbols.
Construct the symbol equation for the reaction of aluminium carbide with water to form methane and aluminium hydroxide.
Solid zinc carbonate reacts with dilute nitric acid to give a colourless solution and bubbles of a gas. Construct the symbol equation for this reaction. Include state symbols.
20232 questions
Which equation is correct?
Complete the equation for the reaction of calcium carbonate with dilute hydrochloric acid by adding state symbols.
20212 questions
Balance the equation shown. FeS2 + O2 → Fe2O3 + SO2
Phosphine reacts with oxygen to form phosphorus(V) oxide, P4O10, and water. Complete the equation for this reaction.
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