Q.

One gram of carbonate (M2CO3) on treatment with excess HCl produces 0.01186 mole of CO2. The molar mass of M2CO3 in gm/mole is

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a

84.3

b

118.6   

c

11.86

d

1186    

answer is C.

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Detailed Solution

M2CO3+2HCl2MCl+CO2+H2O

1gmM2CO3____0.01186moles CO2

?____________  1 mole CO2

1x10.01186=84.3

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