Given below are two statements: Statement I: Mohr's salt is composed of only three types of ions — ferrous, ammonium and sulphate. Statement II: If the molar conductan at infinite dilution of…

Question

Given below are two statements: Statement I: Mohr's salt is composed of only three types of ions — ferrous, ammonium and sulphate. Statement II: If the molar conductan at infinite dilution of ferrous, ammonium and sulphate ions are x1, x2 and x3 S cm2 mol-1, respectively then the molar conductan for Mohr's salt solution at infinite dilution would be given by x1 + x2 + 2x3. In the light of the given statements, choose the correct answer from the options given below:

Paaras Thakur · Accepted Answer

Statement I is true but Statement II is false. Strategy: Identify the components of Mohr's salt and apply Kohlrausch's Law of independent migration of ions. Sum the molar ionic conductivities multiplied by their stoichiometric coefficients. Step 1: Identify Mohr's Salt Formula: (NH4)2Fe(SO4)2.6H2O Ions produ in solution: {(NH4)_2Fe(SO4)_2 Fe^{2+} + 2NH_4^+ + 2SO_4^{2-}} Types of ions: Ferrous (Fe2+), Ammonium (NH4+), and Sulphate (SO42-). Statement I is Correct. ✓ Step 2: Apply Kohlrausch's Law _m^0 = 1 _{{Fe^{2+}}} + 2 _{{NH4^+}} + 2 _{{SO4^{2-}}} Using given variables: _m^0 = x_1 + 2x_2 + 2x_3 Statement II claims x1 + x2 + 2x3, which is Incorrect (missing the factor of 2 for Ammonium). {{Answer: (c) Statement I is true but Statement II is false}}

Answer

Both statements I and Statement II are false

Answer

Statement I is false but Statement II is true

Answer

Statement I is true but Statement II is false

Answer

Both statements I and Statement II are true

Given below are two statements: Statement I: Mohr's salt is composed of only three types of ions — ferrous, ammonium…

Practice this question with progress tracking

More JEE Main Electrochemistry PYQs