Question

Fill in the blank-
{{\text{H}}_2}{\text{S}}{{\text{O}}_4} + {\text{CuC}}{{\text{O}}_3} \to \\_\\_\\_\\_\\_\\_ + {{\text{H}}_2}{\text{O}} + {\text{C}}{{\text{O}}_2}
(A) $CuS{O_4}$
(B) $CuS{O_3}$
(C) $CuS{O_2}$
(D) None of these

Answer 1

Hint : The chemical compound copper(II) carbonate, often known as cupric carbonate, has the formula $CuC{O_3}$ . It is an ionic solid (a salt) composed of copper(II) cations $C{u^{2 + }}$ and carbonate anions $C{O_3}^{2 - }$ at room temperature. Because it is difficult to manufacture and easily interacts with water moisture from the air, this chemical is rarely seen.

Complete Step By Step Answer:
Sulfuric acid, often known as oil of vitriol, is a mineral acid with the chemical formula ${H_2}S{O_4}$ and is made up of the elements sulphur, oxygen, and hydrogen. It is a colourless, odourless, viscous liquid that is miscible in all concentrations with water.
Salt, water, and carbon dioxide gas are produced when carbonates react with acids. Acids produce carbon dioxide, as well as metal salts and water, when they react with metal carbonates or metal bicarbonates. Sodium chloride, carbon dioxide, and water are formed when sodium carbonate interacts with hydrochloric acid. Sodium chloride, carbon dioxide, and water are generated when dilute hydrochloric acid combines with sodium carbonate. Limewater can be used to detect carbon dioxide produced during a process. When acids react with metals, they generate hydrogen gas and a metal salt.
Hence the reaction is as of follows
${{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}{\text{ + CuC}}{{\text{O}}_{\text{3}}} \to {\text{CuS}}{{\text{O}}_{\text{4}}}{\text{ + }}{{\text{H}}_{\text{2}}}{\text{O + C}}{{\text{O}}_{\text{2}}}$
Copper sulphate is produced.
Copper sulphate is used in a number of chemical assays. It is used to test for reducing sugars in Fehling's and Benedict's solutions, which convert soluble blue copper(II) sulphate to insoluble red copper(I) oxide. The Biuret reagent, which is used to test for proteins, also contains copper(II) sulphate.

Note :
Copper sulphate is used to check for anaemia in the blood. The blood is tested by dropping it into a solution of copper sulphate with a defined specific gravity - blood with enough haemoglobin sinks quickly due to its density, whereas blood with insufficient haemoglobin sinks slowly or does not sink at all.