Question

3. Write the name of the reactions given below.
a. Iron displaces copper from copper sulphate solution
b. Precipitation and neutralisation reactions
c. Carbon burns in oxygen and produces carbon dioxide
d. Calcium carbonate when heated gives carbon
dioxide and calcium oxide​

Answer 1

Answer:

Explanation:

a. This reaction is called displacement reaction in which the reactive element Iron, Fe has displaced less reactive Copper from its solution, The chemical equation can be written as: Fe+CuSO4→Cu+FeSO4.

b. They are a part of Double - Displacement Reactions.

c. combustion reaction

d. Calcium carbonate decomposes, on heating , to form calcium oxide and carbon dioxide. When 10 g of calcium carbonate is decomposed completely, then `5.6 g` of calcium of oxide is formed

Answer 2

Answer:

1. Iron displaces copper ions from an aqueous solution of copper sulphate. It is a single displacement reaction of one metal by another metal. Iron is placed above copper in the activity series. Elements placed above in this series are more reactive than those placed below them.

2.A neutralization reaction is a double displacement reaction taking place between the acids and the bases. ... A precipitation reaction is a double displacement reaction taking place between two aqueous ionic compounds which forms a new insoluble ionic compound.

3. CO² is a compound which has different properties from its constituents, carbon, and oxygen.

4. Calcium carbonate is strongly heated until it undergoes thermal decomposition to form calcium oxide and carbon dioxide. The calcium oxide (unslaked lime) is dissolved in water to form calcium hydroxide (limewater). Bubbling carbon dioxide through this forms a milky suspension of calcium carbonate.