Rank the following substances in decreasing order of heats of combustion per mole (most-exothermic least-exothermic)
(ii) > (i) > (iii)
(ii) > (iii) > (i)
(iii) > (i) > (ii)
(iii) > (ii) > (i)
Heat of combustion no. of C-atoms
(number of C-atoms = 8)
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50 mL of 0.2 M ammonia solution is treated with 25 mL of 0.2 M HCl. If pKb of ammonia solution is 4.75, the pH of the mixture will be : Option: 1 3.75 Option: 2 4.75
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