Answer to Question #33032 in Inorganic Chemistry for dora

Question

what chemical should you add to make these solid?
calcium carbonate + water + what chemical?
Thankyou

Answer 1

calciumcarbonate + water + what chemical
This chemical- H₂SO₄

H₂SO₄ + CaCO₃ --> CaSO₄(s) + H₂O + CO₂, so:

CaCO₃ + H₂SO₄ + H₂O => CaSO₄ + (CaOH)₂SO₄ + CO₂

Generally, when yousee a carbonate group in the reactants part of a reaction, the products will contain CO₂ in it.

CaCO₃ is highly insoluble in water and will not usually dissolve in any significant amount in water unless CO₂ is present and dissolved in the water. This is the only possible reaction and it is highly unlikely to happen at all, in fact the reverse reaction is much more favored.

CaCO₃(s) + H₂O(l) → Ca(OH)₂(s) + CO₂(g)