1. Explain the recorded observations (including identification test) match in the equation provided
CaCO3 + 2CH3COOH = Ca(CH3COO)2 + H2O + CO2
You will need to include your understanding of what chemical species affect the pH of the solution.

2.Vinegar was added to another electric jug and the mass was weighed immediately using an electronic balance and again after all signs had finished.
Justify whether the mass of an electric jug and its contents would be less, the same as or greater after being descaled.
Link your answers to the chemical species in the reaction and the principle of conservation of mass.