alleryStart learning →For which kind of gaseous reaction does Kp come out numerically equal to Kc?
AOne where every coefficient equals one
BOne where the moles of gas do not change
COne where the reaction is fully exothermic
DOne where the total pressure stays at 1 atm
Answer & Solution
Correct answer: B. One where the moles of gas do not change
1. The two constants are linked by Kp = Kc times (RT) raised to delta n.
2. Any quantity raised to the power zero equals one, leaving Kp equal to Kc.
3. Delta n is zero exactly when the gaseous moles are the same on both sides.
4. Equal coefficients do not guarantee equal totals, so that option fails the test.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 13 "Fundamental Equilibrium Concepts", section 13.2 Equilibrium Constants_
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