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Per NCERT §5.4(a), the STANDARD STATE of a substance at a specified temperature is which?
AAqueous solution at 1 M
BPure form at 1 atm exactly
CCrystalline form at 0 K only
DIts pure form at 1 bar pressure (typical reference T is 298 K)
Answer & Solution
Correct answer: D. Its pure form at 1 bar pressure (typical reference T is 298 K)
Per NCERT §5.4(a), standard state = pure form at 1 bar. Standard quantities denoted by superscript ⊖. Usual data at 298 K.
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