Question

Q.1 Write a balanced chemical equation for each of the following reactions and also classify them:
(a) lead acetate solution is treated with ditute hydrochloric acid to form lead chloride and acetic acid solution
(b) A piece of sodium metal is added to absolute ethanol to form sodium ethoxide and hydrogen gas.
(c) Iron(III) oxide on heating with carbon monoxide gas reacts to form solid iron and libetares carbon dioxide gas.
(d) Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
(e) Sodium carbonate on reaction with hydrochloric acid in equal molar concentrations gives sodium chloride and sodium hydrogen carbonate.
(f) Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.
(g) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide (Cu2l2), liberates lodine gas and also forms potassium sulphate​

Answer 1

Answer:

1)Lead acetate reacts with dilute hydrochloric acid to give the lead chloride as the main product and acetic acid as a side product. This reaction is an example of precipitation, or you can say double displacement reaction. The Cl atom present in the HCl makes a complex with Lead to give lead chloride. Let's understand the reaction with the help of chemical equation

Lead acetate reacts with dilute hydrochloric acid to give the lead chloride as the main product and acetic acid as a side product. This reaction is an example of precipitation, or you can say double displacement reaction. The Cl atom present in the HCl makes a complex with Lead to give lead chloride. Let's understand the reaction with the help of chemical equationPb(CH3COO)2 + 2HCL(aq) -----> PbCl2(s) + 2CH3COOH(aq)

2)Na + C2H5OH ==>> C2H5ONa + 1/2H2

3) Fe2O3 + 3CO(g) + Heat ———>3Fe(s) + 3CO2(g)

4)2H2S +O2-------->2S+2H2O

5)Na2Co3+HCL--->Nacl+NaHCO3

6) NaHCO3+HCL--->Nacl+H2O+CO2

7)2CuSO4+4Kl -----> 2K2SO4+CU2I2+I2

Answer 2

Answer:

Explanation:

a) Pb(CH3COO)2 + 2HCI - PbCl2 + CH3COOH

This is a Double Displacement reaction.

(b) 2Na + 2C2H5OH + 2C2H5ONa+ H2

This is a Displacement reaction.

(c) Fe2O3 + 3CO + 2Fe + 3CO2

This is a redox reaction.

(d) 2 H2S+O2 → 2 s + 2 H2O

This is a replacement reaction.