Page 233 - Chemistry ICSE Class X
P. 233
Study of Compounds – Hydrogen Chloride 219
15. (a) Write the balanced equations for the following reactions:
(i) Zinc and dilute hydrochloric acid
(ii) Calcium bicarbonate and dilute hydrochloric acid.
(b) State what is observed when hydrochloric acid is added to silver nitrate solution.
16. Solution A reacts with an acid B (which gives greenish yellow gas on reacting with oxidising agents like Pb O )
3
4
to give white precipitate C insoluble in nitric acid but soluble in ammonium hydroxide. Name A, B and C.
17. Write the balanced chemical equations for the following reactions:
< 200°C
(a) NaCl + H SO o
2
4
> 200°C
(b) NaCl + H SO o
2
4
(c) NH OH + HCl o
4
(d) NaHSO 3 + HCl o
(e) Cu(NO ) + HCl o
3 2
(f) Pb O 4 + HCl o
3
18. Write equations for the reactions of aqueous hydrochloric acid on:
(a) silver nitrate solution (b) magnesium foil (c) caustic soda solution
(d) iron wire (e) zinc carbonate (f) copper oxide
(g) lead nitrate solution.
19. Tick (9) the correct answer.
(i) The strongest acid amongst the following is
(a) HF (b) HCl
(c) HBr (d) HI
(ii) Which of the following is most stable towards heat?
(a) HCl (b) HOCl
(c) HBr (d) HI
(iii) Under which of the following conditions, the reaction between hydrogen and chlorine is explosive?
(a) diffused sunlight (b) in dark
(c) direct bright sunlight (d) none of these
(iv) Which of the following is lighter than air?
(a) hydrogen chloride (b) sulphur dioxide
(c) ammonia (d) hydrogen sulphide
(v) Which of the following is the most soluble in water?
(a) hydrogen sulphide (b) hydrogen
(c) ammonia (d) oxygen
(vi) Which of the following gives dense white fumes with hydrogen chloride?
(a) sodium hydroxide (b) limewater
(c) silver nitrate (d) ammonium hydroxide
ŶƐǁĞƌƐ
(i) (d) (ii) (a) (iii) (c) (iv) (c) (v) (c) (vi) (d)
