Some green copper(II) carbonate powder is heated strongly in a test tube. The gas given off is bubbled through limewater. The chemical equation for the reaction occurring in the heated tube is:
CuCO3(s)→CuO(s)+CO2(g) \text{CuCO}_3(\text{s}) \rightarrow \text{CuO}(\text{s}) + \text{CO}_2(\text{g}) CuCO3(s)→CuO(s)+CO2(g)What type of chemical reaction is taking place when copper(II) carbonate is heated?
State the appearance of the limewater before and after the gas was bubbled through it.
The Parthenon in Greece is a famous ancient monument made largely of marble, which is a form of calcium carbonate. The appearance of the marble has changed gradually over the years due to the effects of sulfur dioxide in the atmosphere.
Describe how sulfur dioxide causes this deterioration of the marble.
23 exam-style questions on Edexcel IGCSE Chemistry Acids, bases and salt preparations. Each one has a worked solution and a mark scheme showing where the marks go.