Home
Class 12
CHEMISTRY
In which of the following cell the energ...

In which of the following cell the energy of combustion of the reaction is directly converted into electricity?

A

Lechlanche cell

B

Concentration cell

C

Fuel cell

D

Lead storage battery

Text Solution

AI Generated Solution

The correct Answer is:
To determine which cell converts the energy of combustion directly into electricity, we can analyze the options provided: ### Step 1: Understand the types of cells 1. **Laglang Cell**: This is a type of dry cell that was historically used for telephonic purposes. It does not involve combustion reactions to generate electricity. **Hint**: Consider the primary function of the Laglang cell and its chemical processes. ### Step 2: Analyze the Concentration Cell 2. **Concentration Cell**: In this type of cell, the energy derived from the difference in concentration of ions is converted into electrical energy. There is no combustion reaction involved here. **Hint**: Focus on the energy source of the concentration cell and its relation to combustion. ### Step 3: Examine the Fuel Cell 3. **Fuel Cell**: A fuel cell converts the chemical energy from the combustion of hydrocarbons (like hydrogen and oxygen) directly into electricity. This process involves the oxidation of fuel and is a direct conversion of combustion energy. **Hint**: Think about how fuel cells operate and the role of combustion in their energy conversion. ### Step 4: Consider the Lead Storage Battery 4. **Lead Storage Battery**: This battery operates through electrochemical reactions involving lead and lead dioxide in sulfuric acid. It does not involve combustion reactions to produce electricity. **Hint**: Reflect on the chemical processes occurring in a lead storage battery and their relation to combustion. ### Conclusion After analyzing all options, the only cell that directly converts the energy of combustion of a reaction into electricity is the **Fuel Cell**. ### Final Answer **The correct answer is: Fuel Cell.**
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following is the energy currency of cells?

In which of the following cells reaction quotient is equal to one ?

Which of the following is common in combustion and respiration

All combustion reactions are………………. .

Which of the following reactions of methane is incomplete combustion:

Heat of which of the following reaction gives enthalpy of formation directly?

Fuel cells : Fuel cells are galvanic cells in which the chemical energy of fuel cell is directly converted into electrical energy. A type of fuel cell is a hydrogen - oxygen fuel cell. It consists of two electrodes made up of two porous graphite impregnated with a catalyst ( platinum, silver, or metal oxide ). The electrodes are placed in aqueous solution of NaOH . Oxygen and hydrogen are continuously fed into the cell. Hydrogen gets oxidized to H^(o+) which is neutralized by overset(c-)(O)H, i.e., anodic reaction. At cathode, O_(2) gets reduced to overset(c-)(O)H Hence, the net reaction is The overall reaction has DeltaH=-285.6 kJ mol^(-1) and DeltaG=-237.4 kJ mol^(-1) at 25^(@)C If the cell voltage is 1.23V for the H_(2)-O_(2) fuel cell and for the half cell :