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Grade 12th passPhysical Chemistry

I2 (aq)+l^-(aq)I^-3(aq). We start with 1 mole of I2 and 0.5 mole of I- in 1 litre flask after equilibrium is reached excess of AgNO3 gave 0.25 mole of yellow precipitate equilibrium constant is:A.1.33B. 2.66C. 2.0D.3.0

Profile image of akash
8 Years agoGrade 12th pass
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1 Answer

Profile image of Arun
8 Years ago
Dear Akash
 
 
Keq=[I 3]/[I 2][I -]
        =0.25/(0.25)(0.75)
        =1/0.75
        =1.33
This happens because of the following reaction-
3 +3AgNo------>3AgI + 3No3 when I  reacts with AgNo 3  it gives yellow precipitate of AgI.
 
 
Regards
Arun (askIITians forum expert)