The v-shaped graph represents conductometric titration of:

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This question was previously asked in

DSSSB PGT Chemistry (Female) Official Paper (Held On: 06 Jul, 2018 Shift 1)

Answer 1

CONCEPT:

Conductometric Titration

Conductometric titration involves the measurement of electrical conductivity during a titration process to monitor the progress of the reaction.
The conductivity of the solution changes based on the nature of the ions present during the titration.
In the case of a strong acid vs strong base titration, the reaction leads to the formation of neutral water molecules, which results in a distinct "V-shaped" graph.

EXPLANATION:
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In a titration between a strong acid and a strong base:
- Initially, the solution contains excess H⁺ ions from the strong acid, which contribute to high conductivity.
- As the strong base is added, OH^- ions react with H⁺ ions to form neutral water molecules (H₂O), reducing the number of free ions and decreasing conductivity.
- At the equivalence point, all H⁺ ions are neutralized, and the conductivity reaches a minimum.
- Beyond the equivalence point, excess OH^- ions from the strong base increase the conductivity, resulting in the "V-shaped" graph.
This characteristic "V-shaped" graph is specific to the titration of a strong acid with a strong base.

Therefore, the correct answer is Strong acid vs strong base.