alleryHydrogen gas in the standard electrode is held at a pressure of:
AHalf bar
BOne bar
CTwo bars
DTen bars
Answer & Solution
Correct answer: B. One bar
1. Both forms of hydrogen are kept at unit concentration.
2. For the gas, unit concentration means one bar of pressure.
3. The hydrogen ion in solution is kept at one molar.
_Source: syllabus Chemistry Part I, Chapter 3, Electrochemistry._
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