The following reaction scheme is considered:
(1) CaCO3 → a + b↑
(2) H2 + Cl2 → c↑
(3) a + H2O → d
(4) a + c → e + H2O
(5) d + c → e + H2O
(6) b + H2O ⇄ f
(7) Ca + c → e + H2↑
What is required:
a) identify the substances marked with the letters a - f;
b) write the equations of the chemical reactions included in the scheme;
c) indicate the type of each reaction;
d) calculate the mass of substance that is obtained in reaction (1), if 1 ton of calcium carbonate of 88% purity is used and it works with a yield of 94%.