write a balanced chemical equation for each of the following reaction and also elassify them -
a) lead acetate solution is treated with dilute hydrochloric acid to form lead chloride & arctic acid solution.
b) A piece of sodium metal is added to alsolute ethanol to from sodium ethoride & hydrogen gas.
c) Iron (iii) oxide on heating with carbon monoxide & hydrogen gas.
d) hydrogen sulphide gas react with oxygen gas to from solid sulpher & liguid water.

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Solution

a) Pb(CH₃COO)₂+ 2HCl $\to$ PbCl₂ + 2CH₃COOH

b) 2C₂H₅OH +2Na $\to$ 2C₂H₅ONa + H₂

c) Fe₂O₃ + 3 CO $\to$ 2 Fe + 3 CO₂

d) 2H₂S + O₂ $\to$ 2S + 2H₂O

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Question 33
Write a balanced chemical equation for each of the following reactions and also classify them.

(a) Lead acetate solution is treated with dilute 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.

(d) Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.

Q. Balance the chemical equation by including the physical states of the substances for the following reactions.

a) Barium chloride and sodium sulphate aqueous solutions react to give insoluble Barium sulphate and an aqueous solution of sodium chloride.

b) Sodium hydroxide reacts with hydrochloric acid to produce sodium chloride and water.

c) Zinc pieces react with dilute hydrochloric acid to liberate hydrogen gas and forms zinc chloride

Write balanced equations for the reaction of dilute hydrochloric acid with each of the following :
(a) iron,
(b) sodium hydrogen carbonate,
(c) iron(II) sulphide,
(d) sodium sulphite,
(e) sodium thiosulphate solution.

Name the following:
(i) Acid present in the stomach of mammals.
(ii) Drying agent used to dry hydrogen chloride.
(iii) Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celsius.
(iv) Gas that yields dense white fumes when mixed with hydrogen chloride.
(v) Two solution that yield white precipitates, when treated with hydrogen chloride or hydrochloric acid.
(vi) Gas obtained by treating metals with hydrochloric acid.
(vii) Gas obtained by treating ferrous sulphide with hydrochloric acid.
(viii) Five oxidizing agents that liberate chlorine from concentrated hydrochloric acid.
(ix) Acid used to extract glue from bones.
(x) A chloride which is soluble in excess of ammonium hydroxide.
(xi) A greenish yellow gas.
(xii) A chemical in which gold can be dissolved.
(xiii) A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
(xiv) Two colourless gases which when mixed produce a white solid.

Write the balanced chemical equations for the following reactions-

(a) Sodium carbonate on reaction with hydrochloric acid in equal molar concentration gives sodium chloride and sodium hydrogen carbonate.

(b) Sodium hydrogen carbonate on reaction with hydrochloric acid gives sodium chloride, water and liberates carbon dioxide.

(c) Copper sulphate on treatment with potassium iodide precipitates cuprous iodide $({Cu}_{2} I_{2})$ , liberates iodine gas and also forms potassium sulphate.

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a) Pb(CH3COO)2 + 2HCl → PbCl2 + 2CH3COOH b) 2C2H5OH +2Na → 2C2H5ONa + H2 c) Fe2O3 + 3 CO→ 2 Fe + 3 CO2 d) 2H2S + O2 →2S + 2H2O

a) Pb(CH₃COO)₂+ 2HCl $\to$ PbCl₂ + 2CH₃COOH

b) 2C₂H₅OH +2Na $\to$ 2C₂H₅ONa + H₂

c) Fe₂O₃ + 3 CO $\to$ 2 Fe + 3 CO₂

d) 2H₂S + O₂ $\to$ 2S + 2H₂O