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1 gram of a carbonate (M 2 CO 3 ) on treatment with excess HCl produces 0.01186 mole of CO 2 . The molar mass of M 2 CO 3 in g mol –1 is -

1. 118.6
2. 11.86
3. 1186
4. 84.3

Correct answer: 84.3

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