Chemical and Ionic Equilibrium - Result Question 25

####25. An example of a reversible reaction is

(1985,1M)

(a) Pb(NO3)2(aq)+2NaI(aq)=PbI2(s)+2NaNO3(aq)

(b) AgNO3(aq)+HCl(aq)=AgCl(s)+HNO3(aq)

(c) 2Na(s)+2H2O(l)=2NaOH(aq)+H2(g)

(d) KNO3(aq)+NaCl(aq)=KCl(aq)+NaNO3(aq)

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Solution:

  1. In reactions (a), (b) and (c), atleast one of the product is either insoluble precipitate or a gas that drive the reaction continuously to right and do not allow equilibrium to be established. Following is the reversible reaction.

KNO3(aq)+NaCl(aq)KCl(aq)+NaNO3(aq)



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