Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET 2026
Exam
NEET
Year
2026
Subject
Chemistry
Chapter
Chapter

NEET 2026 · Chemistry · Chapter

A current of 1.93 A is passed through an aqueous solution of silver...

A current of 1.93 A1.93 \text{ A} is passed through an aqueous solution of silver nitrate (AgNO3\text{AgNO}_3) for 500 seconds500 \text{ seconds}. What is the mass of silver deposited at the cathode?
(Given: Molar mass of Ag=108 g mol−1\text{Ag} = 108 \text{ g mol}^{-1}, 1 F=96500 C mol−11 \text{ F} = 96500 \text{ C mol}^{-1})

Options

  1. A0.54 g0.54 \text{ g}
  2. B1.08 g1.08 \text{ g}
  3. C0.108 g0.108 \text{ g}
  4. D10.8 g10.8 \text{ g}

Correct answer

B. 1.08 g1.08 \text{ g}

Step-by-step solution

The total charge QQ passed through the solution is given by Q=I×tQ = I \times t.

Substituting the given values:
Q=1.93 A×500 s=965 CQ = 1.93 \text{ A} \times 500 \text{ s} = 965 \text{ C}

The reduction reaction at the cathode is:
Ag++e−→Ag\text{Ag}^+ + \text{e}^- \rightarrow \text{Ag}

This indicates that 1 mole1 \text{ mole} of electrons (96500 C96500 \text{ C}) deposits 1 mole1 \text{ mole} of silver (108 g108 \text{ g}).

Using Faraday's first law of electrolysis, the mass mm of silver deposited is:
m=MnF×Qm = \dfrac{M}{nF} \times Q

Here, n=1n = 1 for Ag+\text{Ag}^+. Substituting the values:
m=1081×96500×965m = \dfrac{108}{1 \times 96500} \times 965

m=108100=1.08 gm = \dfrac{108}{100} = 1.08 \text{ g}

Answer: 1.08 g1.08 \text{ g}
Practice Chapter on Quantrex Academy →

More from Chapter

Which of the following postulates of Dalton's atomic theory provides the direct… NEET 2026Consider the following five samples of substances: A. 88 g of CO_2 B. 96 g of O_2 C. 34 g… NEET 2026If the shortest wavelength of the Lyman series for a hydrogen atom is x , then the… NEET 2026What are the energy of the second Bohr orbit of Be^ 3+ and the radius of the third Bohr… NEET 2026Consider the following electronic configurations of neutral atoms: A. [Ne] 3s^2 3p^4 B.… NEET 2026Consider the following sequences of molecules and their associated properties: (I) CH_3Cl… NEET 2026The potential energy profile for a hypothetical reaction X arrow Y is shown in the given… NEET 2026For a reversible gas-phase reaction, X(g) + Y(g) leftharpoons Z(g) the rate constant for… NEET 2026 Full Chapter list All NEET PYQs