6.
calcium and its compounds, have properties typical of group 2 in the periodic table.
calcium carbonate, caco3, reacts with acids such as nitric acid.
a student neutralised 2.68 g of caco3 with 2.50 mol dm
nitric acid, hno3.
the equation for this reaction is shown below.
caco3(s) + 2hno3(aq) - ca(no3)2(aq) + co2(g) + h2o(1)
the student left the solution of calcium nitrate formed to crystallise. crystals of
hydrated calcium nitrate formed containing 30.50% of h2o, by mass.
calculate the formula of the hydrated calcium nitrate.