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Standard XII

Chemistry

Faraday's First Law

In passing 3 ...

Question

In passing 3 F of electricity through three electrolytic cells connected in series containing $A g^{\oplus}, C a^{2 +}, a n d A l^{3 +}$ ions, respectively. The molar ratio in which the three metal ions are liberated at the electrode is:

1 : 2 : 3

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2 : 3 : 1

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6 : 3 : 2

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3 : 4 : 2

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Solution

The correct option is D $6 : 3 : 2$
1 Eq of $A g^{\oplus}$ : 1 Eq of $C a^{2 +}$ : 1 Eq pf $A l^{3 +}$
1 mol of $A g^{\oplus} : \frac{1}{2}$ mol of $C a^{2 +}; \frac{1}{3}$ mol of $A l^{3 +}$
$∴$ mole ratio is $1 : \frac{1}{2} : \frac{1}{3} = 6 : 3 : 2$

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Similar questions

Three faraday of electricity is passed through three electrolytic cells connected in series containing $A g^{+}, C a^{2 +}$ and $A l^{3 +}$ ions respectively. The molar ratio in which the three metal ions are liberated at the electrodes is:

Q. In passing

3 F

of electricity through three electrolytic cells connected in series containing

A g^{\oplus}, C a^{2 +}

, and

A l^{3 +}

ions, respectively. The molar ratio in which the three metal ions are liberated at the electrodes is:

Q. Three faraday of electricity is passed through three electrolytic cells connected in series containing

A g^{+}, C a^{2 +}

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Q. An electric current is passed through two electrolytic cells connected in series, one containing

A g {N O}_{3}

(aq) and other

H_{2} {S O}_{4}

(aq). What volume of

O_{2}

measured at

25^{o} C

and 750 mm Hg would be liberated in litre from

H_{2} {S O}_{4}

, if

8 \times 10^{22}

ions of

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are deposited from

A g {N O}_{3}

solution? (Round off to integer)

Q. An electric current is passed through two electrolytic cells connected in series, one containing

A g {N O}_{3}

(aq) and other

H_{2} {S O}_{4}

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In passing 3 F of electricity through three electrolytic cells connected in series containing Ag⊕,Ca2+,andAl3+ ions, respectively. The molar ratio in which the three metal ions are liberated at the electrode is:

The correct option is D 6:3:21 Eq of Ag⊕ : 1 Eq of Ca2+ : 1 Eq pf Al3+ 1 mol of Ag⊕:12 mol of Ca2+;13 mol of Al3+ ∴ mole ratio is 1:12:13=6:3:2

In passing 3 F of electricity through three electrolytic cells connected in series containing $A g^{\oplus}, C a^{2 +}, a n d A l^{3 +}$ ions, respectively. The molar ratio in which the three metal ions are liberated at the electrode is:

The correct option is D $6 : 3 : 2$
1 Eq of $A g^{\oplus}$ : 1 Eq of $C a^{2 +}$ : 1 Eq pf $A l^{3 +}$
1 mol of $A g^{\oplus} : \frac{1}{2}$ mol of $C a^{2 +}; \frac{1}{3}$ mol of $A l^{3 +}$
$∴$ mole ratio is $1 : \frac{1}{2} : \frac{1}{3} = 6 : 3 : 2$