Physics-
General
Easy
Question
The graph shows the variation of temperature (T) of one kilogram of a material with the heat (H) supplied to it, At O, the substance is in the solid state. From the graph, we can conclude that...
is the melting point of the solid.
- BC represents the change of state from solid to liquid.
represents the latent heat of fusion of the substance.
represents the latent heat of vaporization of the licquid.
is the melting point of the solid.
represents the latent heat of fusion of the substance.
represents the latent heat of vaporization of the licquid.
The correct answer is: represents the latent heat of fusion of the substance.
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The following are the heats of reactions-
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C2H2+H2→C2H4is-</span
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i)ΔHOofHO(l)=–68.3Kcalmol–1
ii)ΔHO comb ofC2H4 =–337.2Kcalmol–1
iii) ΔHO comb ofC2H4 =–363.7Kcalmol–1Then heat change for the reaction
C2H2+H2→C2H4is-</span
chemistry-General
