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Q.

The equivalent weight of HNO3 in the reaction2HNO3⟶2NO+H2O+3O  is.

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a

21

b

42

c

63

d

10.5

answer is A.

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Detailed Solution

2HNO3         ⟶     2NO    +   H2O  +  3O2[1 + 14 + (3 X 16)]         3 x 16 = 48parts= 216 parts.48 parts by weight of oxygen                                        = 126 parts by weight of HNO3.∴  8 parts by weight of oxygen                                              =12648×8=21.
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