Question

When sulfuric acid reacts with calcium carbonate, ……. is formed?
A. Calcium sulfate
B. Calcium
C. Calcium hydroxide
D. Hydrogen gas.

Answer 1

Chemical reactions are those reactions in which reactants under some conditions like by changing the pressure, temperature or by introducing the catalyst reactant gets converted into products. There are many types of chemical reactions like reversible, irreversible, exothermic, endothermic etc.

Complete answer:
Sulfuric acid is a mineral acid which is composed by sulfur, hydrogen and oxygen and represented by the chemical formula${{H}_{2}}S{{O}_{4}}$. It is a colorless and viscous liquid which is miscible with water at all concentrations. The acid is present in pure form which is highly corrosive towards other materials and it has a strong acidic nature.
Calcium carbonate is also a chemical compound represented by the chemical formula $CaC{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\to CaS{{O}_{4}}+{{H}_{2}}O+C{{O}_{2}}$ $CaC{{O}_{3}}$this is common substance which is commonly found in rocks and minerals. Calcium carbonate is very important in agricultural lime and produced when calcium ions in hard water react with carbonate ions to create limescale.
When sulfuric acid reacts with calcium carbonate and calcium sulfate, carbon dioxide and water is produced. The chemical reaction can be shown as:
$CaC{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\to CaS{{O}_{4}}+{{H}_{2}}O+C{{O}_{2}}$

Calcium sulfate is represented by the symbol $CaS{{O}_{4}}$, thus we can say that option A is the correct answer.

Note:
Calcium sulfate is known as hydrates and one particular hydrate which is very commonly known is plaster of Paris and another naturally occurring mineral is known as gypsum. All are white in color and poorly soluble in water.