A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is________________?

Byadmin March 11, 2019August 29, 2021

A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is________________?

A. Zero
B. Positive
C. Negative
D. None of these

Thermodynamics for Chemical

A solid is transformed into vapour without going to the liquid phase at_________________?

A solid is transformed into vapour without going to the liquid phase at_________________?

A. Triple point
B. Boiling point
C. Below triple point
D. Always

Read More A solid is transformed into vapour without going to the liquid phase at_________________?
Thermodynamics for Chemical

The quantitative effect of temperature on chemical equilibrium is given by the____________________?

The quantitative effect of temperature on chemical equilibrium is given by the____________________?

A. Van’t-Hoff equation
B. Le-Chatelier’s principle
C. Arrhenius equation
D. None of these

Read More The quantitative effect of temperature on chemical equilibrium is given by the____________________?
Thermodynamics for Chemical

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?

A. More in vapour phase
B. More in liquid phase
C. Same in both the phases
D. Replaced by chemical potential which is more in vapour phase

Read More When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?
Thermodynamics for Chemical

The absolute entropy for all crystalline substances at absolute zero temperature is ____________________?

The absolute entropy for all crystalline substances at absolute zero temperature is ____________________?

A. Zero
B. Negative
C. More than zero
D. Indeterminate

Read More The absolute entropy for all crystalline substances at absolute zero temperature is ____________________?
Thermodynamics for Chemical

What happens in a reversible adiabatic compression ?

What happens in a reversible adiabatic compression ?

A. Heating occurs
B. Cooling occurs
C. Pressure is constant
D. Temperature is constant

Read More What happens in a reversible adiabatic compression ?
Thermodynamics for Chemical

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

A. Δ H = 0 and ΔS = 0
B. Δ H ≠ 0 and ΔS = 0
C. Δ H ≠ 0 and ΔS ≠ 0
D. Δ H = 0 and ΔS ≠ 0

Read More High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?

Similar Posts