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Chemistry · 2022 · 2 marks
CBSE 2022 · Region 1 · Set 2 · Q2
Out of the following pairs, predict with reason which will allow greater conduction of electricity: (i) 1 M CH_3 COOH solution or 0.1 M CH_3 COOH…
Out of the following pairs, predict with reason which will allow greater conduction of electricity :
(i)
$\displaystyle 1 \mathrm{M} \mathrm{CH}_{3} \mathrm{COOH}$ solution or $\displaystyle 0.1 \mathrm{M} \mathrm{CH}_{3} \mathrm{COOH}$ solution on dilution.
(ii)
Copper wire at $\displaystyle 27$ °C or Copper wire at $\displaystyle 50$ °C.
Marking-scheme solution
(i) \(\displaystyle 0 \cdot 1 M \ \mathrm{CH}_{3} \mathrm{COOH}\), because on dilution degree of dissociation increases
(ii) Cu at $\displaystyle 27$ °C, metallic conductance decreases with increase in temperature
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CBSE Class 12 Chemistry past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.