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The standard state of a substance is considered when the temperature is 298 k and the pressure is ____________

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in Chemistry – Class 11 by (148k points)
The standard state of a substance is considered when the temperature is 298 k and the pressure is ____________

(a) 1 ATM

(b) 1 bar

(c) 1 Pascal

(d) 760 mm HG

This question was posed to me during an interview.

My question comes from Thermodynamics topic in division Thermodynamics of Chemistry – Class 11

1 Answer

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Best answer
Correct choice is (b) 1 bar

Easy explanation: All the standard states of a substance are considered when the temperature is 298 Kelvin and the pressure is 1 bar. 1 bar = 0.987 atmospheric pressure = 10000 Pascal = 750.0617 mm of Mercury.

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