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Q.

The weight of I2 (Mol. Wt=254) required to completely oxidise 1 mole of Na2S2O3 according to the following equation (unbalanced) is I2+Na2S2O3→NaI+Na2S4O6

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a

254 g

b

98g

c

80 g

d

127g

answer is A.

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The weight of I2 (Mol. Wt=254) required to completely oxidise 1 mole of Na2S2O3 according to the following equation (unbalanced) is I2+Na2S2O3→NaI+Na2S4O6