Chemistry

Chemistry

Problem

Substance X has a potential-energy minimum of −350 kJ mol−1-350\,\text{kJ mol}^{-1} at an internuclear distance of 140 pm140\,\text{pm}. Substance Y is reported to have a bond that is 10 pm10\,\text{pm} shorter and 50 kJ mol−150\,\text{kJ mol}^{-1} stronger than that of X. Which pair of values most appropriately represents the position of the minimum of Y’s potential-energy curve? a) (150 pm,  −400 kJ mol−1)(150\,\text{pm},\;-400\,\text{kJ mol}^{-1}) b) (130 pm,  −300 kJ mol−1)(130\,\text{pm},\;-300\,\text{kJ mol}^{-1}) c) (150 pm,  −300 kJ mol−1)(150\,\text{pm},\;-300\,\text{kJ mol}^{-1}) d) (130 pm,  −400 kJ mol−1)(130\,\text{pm},\;-400\,\text{kJ mol}^{-1})

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