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Case study·Hard exam skill (4/5)·No calculator

Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Question

A student measures the resistance of a 0.050 M0.050\,\mathrm{M} electrolyte solution as 80.0 Ω80.0\,\Omega in a conductance cell of cell constant 1.20 cm−11.20\,\mathrm{cm^{-1}}.
Total: 4 marks

(a) Calculate the conductance. (1 mark)

(b) Calculate the conductivity. (1 mark)

(c) Calculate the molar conductivity. (2 marks)

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cbse-chemistry-12.u2.t2-3.case.005

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