Chemical Thermodynamics Question 175

Question: The heat of transition $ (\Delta H_{t}) $ of graphite into diamond would be, where $ C(graphite)+O_2(g)\to CO_2(g);\Delta H=x,kJ $

$ C(diamond),+C_2(g)\to CO_2(g);\Delta H=y,kJ $ [Pb. PET 1985]

Options:

A) $ (x+y),kJ,mo{{l}^{-1}} $

B) $ (x-y),kJ,mo{{l}^{-1}} $

C) $ (y-x),kJ,mo{{l}^{-1}} $

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

Graphite $ \xrightarrow{{}} $ diamond $ \Delta H_{t}=(x-y),kJ,mo{{l}^{-1}} $ .



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