Question

CHEMICAL REACTIONS AND EQUATIONS 5

Short Answer Questions

19. Write the balanced chemical equations for the following reactions

and identify the type of reaction in each case.

(a) Nitrogen gas is treated with hydrogen gas in the presence of a

catalyst at 773K to form ammonia gas.

(b) Sodium hydroxide solution is treated with acetic acid to form

sodium acetate and water.

(c) Ethanol is warmed with ethanoic acid to form ethyl acetate in

the presence of concentrated H2

SO4

.

(d) Ethene is burnt in the presence of oxygen to form carbon

dioxide, water and releases heat and light.

20. Write the balanced chemical equations for the following reactions

and identify the type of reaction in each case.

(a) Thermit reaction, iron (III) oxide reacts with aluminium and

gives molten iron and aluminium oxide.

(b) Magnesium ribbon is burnt in an atmosphere of nitrogen gas

to form solid magnesium nitride.

(c) Chlorine gas is passed in an aqueous potassium iodide

solution to form potassium chloride solution and solid iodine.

(d) Ethanol is burnt in air to form carbon dioxide, water and

releases heat.

21. Complete the missing components/variables given as x and y in

the following reactions

(a) Pb(NO3

)

2

(aq) + 2KI(aq) → PbI2

(x) + 2KNO3

(y)

(b) Cu(s) + 2Ag NO3

(aq) → Cu(NO3

)

2

(aq) + x(s)

(c) Zn(s) + H2

SO4

(aq) → ZnSO4

(x) + H2

(y)

(d) CaCO3

(s) →x CaO(s) + CO2

(g)

22. Which among the following changes are exothermic or

endothermic in nature?

(a) Decomposition of ferrous sulphate

(b) Dilution of sulphuric acid

(c) Dissolution of sodium hydroxide in water

(d) Dissolution of ammonium chloride in water

23. Identify the reducing agent in the following reactions

(a) 4NH3

+ 5O2

→ 4NO + 6H2O

(b) H2O + F2

→ HF + HOF

(c) Fe2O3

+ 3CO → 2Fe + 3CO2

(d) 2H2

+ O2 → 2H2O

07/05/2018​

Answer 1

it is too long question ask it in sections anybody will give answer