Chemical Engineering Thermodynamics If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) ⇋ C₃H₈(g) will be __________ Kcal. -30.2 55.2 -19.4 -55.2 -30.2 55.2 -19.4 -55.2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The change in Gibbs freee energy for vaporisation of a pure substance is Negative Zero Positive May be positive or negative Negative Zero Positive May be positive or negative ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nCv ln (T₂/T₁) is valid for Cooling of a substance Reversible isothermal volume change Simultaneous heating and expansion of an ideal gas Heating of a substance Cooling of a substance Reversible isothermal volume change Simultaneous heating and expansion of an ideal gas Heating of a substance ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the Gibbs-Helmholtz equation Gibbs-Duhem equation Third law of thermodynamics Joule-Thomson effect Gibbs-Helmholtz equation Gibbs-Duhem equation Third law of thermodynamics Joule-Thomson effect ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following is Virial equation of state? None of these (p + a/V²)(V - b) = nRT PV = A + B/V + C/V² + D/V³ + … PV = nRT None of these (p + a/V²)(V - b) = nRT PV = A + B/V + C/V² + D/V³ + … PV = nRT ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics With increase in pressure (above atmospheric pressure), the Cp of a gas Remains unchanged Decreases Increases First decreases and then increases Remains unchanged Decreases Increases First decreases and then increases ANSWER DOWNLOAD EXAMIANS APP
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