Two moles of magnesium bicarbonate on strong heating liberates….litres of carbon dioxide at STP

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179.2

44.8

67.2

89.6

answer is D.

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Detailed Solution

MgHCO32→∆MgCO3s+H2Og+CO2g; MgCO3s→∆MgOs+CO2g; 44.8 litres of CO2 is liberated at STP by 1 mole of MgHCO32 89.6 litres of CO2 is liberated at STP by 2 moles of MgHCO32

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