Question

Genius Please solve it.... IIT Question​

Answer 1

Answer:

$\bold\red{(1) 84.3\:g{mol}^{-1}}$

Explanation:

First of we shall write the balanced equation for the chemical reaction .

$M_{2}CO_{3}+2HCl->CO_{2}+2MCl+H_{2}O$

Now,

from equivalent concept,

Moles of $M_{2}CO_{3}$ = Moles of [/tex]CO_{2}[/tex] produced.

But,

moles of $M_{2}CO_{3}$

$= \frac{w}{molar \: mass} = 0.01186$

Therefore,

$\bold{Molar\:mass = 84.3\:g{mol}^{-1}}$

Hence,

Correct option is (1)

Answer 2

Answer:84.3

Explanation:

M2CO3+HCl gives co2+MCl+H2O this will be the balanced reaction.then use the given data to answer.                                                                                           now 1mole of carbonate gives 1mole of co2.so 0.01186 mole of CO2  reacts with  0.01186 moles of carbonate.so 1/0.01186 gives molar mass of carbonate that is 84.3