Chemistry
(a) Write the cell reaction for the electrolysis of dil. AgNO3 solution using Ag anode and Cu cathode.
(b) Name a compound of ammonia which sublimes on heating?
(c) Name the gas evolved on reaction of aluminium with boiling concentrated caustic alkali solution, write the equation.
Electrolysis
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Answer
(a) AgNO3 ⇌ Ag+ + NO3-
H2O ⇌ H+ + OH-
Reaction at anode :
4OH- - 4e- ⟶ 4OH
4OH ⟶ 2H2O + O2 ↑
Reaction at cathode :
H+ + 1e- ⟶ H
H + H ⟶ H2 ↑
(b) Ammonium chloride
(c) Hydrogen gas is evolved
2Al + 2NaOH + 2H2O ⟶ 2NaAlO2 + 3H2 ↑
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