A student adds water to white anhydrous copper(II) sulfate. A blue solid forms and the temperature of the mixture increases.
Statement 1: Warming the blue solid can produce the white solid again.
Statement 2: Adding water and warming favour the same direction of this reversible change.
Statement 3: The change that forms the white solid takes in the same amount of energy as the change that forms the blue solid gives out.
Which statements are correct?
1 only
2 and 3 only
1 and 3 only
2 only
124 exam-style questions on OCR GCSE Chemistry 5.3 Equilibria, covering 5.3.1 Reversible reactions and dynamic equilibrium and 5.3.2 Changing the position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.