1 gram of a carbonate ( M _ 2 CO _ 3 ) on treatment with excess HCl...

1

gram of a carbonate

\left({M}_{2}{CO}_{3}\right)

on treatment with excess

HCl

produces

0.01186

moles of

{CO}_{2}

. The molar mass of

{M}_{2}{CO}_{3} in {gmol}^{- 1}

is:

Options

A84.3
B118.6
C11.86
D1186

Correct answer

A. 84.3

Step-by-step solution

{M}_{2}C{O}_{3} + 2HCl \to 2MCl + {H}_{2}O + C{O}_{2} $<br /><br />From reaction,<br /><br />Moles of{M}_{2}C{O}_{3} = MolesofC{O}_{2}$

$\dfrac{Weightof{M}_{2}{CO}_{3}}{MolarMassof{M}_{2}{CO}_{3}} = \dfrac{Weightof{CO}_{2}}{Molarmassof{CO}_{2}}$

$\dfrac{1}{MolarMassof{M}_{2}{CO}_{3}} = \dfrac{0 . 01186 \times 44}{44}$

$\dfrac{1}{MolarMassof{M}_{2}{CO}_{3}} = 0 .01186$

Molar Mass $= \dfrac{1}{0.01186} = 84.3$ g/mol

Practice Some Basic Concepts of Chemistry on Quantrex Academy →

More from Some Basic Concepts of Chemistry

Match List-I with List-II. List-I Mass of substance List-II Number of atoms A. 1.8 mg… JEE Main 2026 Which of the following contain the same number of atoms ? (Given : Molar mass in g mol ^… JEE Main 2026 An oxide of iron contains 69.9\% iron, its empirical formula, is: (Given: Molar mass of… JEE Main 2026 What volume of hydrogen gas at STP would be liberated by action of 50 mL of H_2SO_4 of… JEE Main 2026 How many grams of residue is obtained by heating 2.76 g of silver carbonate? (Given… JEE Main 2026 The correct order of total number of atoms present in (A) 2 moles of cyclohexane (B) 684… JEE Main 2026 Number of moles and number of molecules in 1.4187 L of SO_2 at STP respectively are: JEE Main 2026 The ratio of mass percentage (w/w) of C : H in a hydrocarbon is 12 : 1 . It has two… JEE Main 2026 Full Some Basic Concepts of Chemistry list All JEE Main PYQs