162634
In which of the following case entropy decreases:
1 Solid changing to liquid
2 Expansion of a gas
3 Crystals dissolve
4 Polymerisation
Explanation:
In polymerization, large no. of small units combine to form a big unit.
NCERT-XI-159
3 RBTS PAPER
162635
Entropy of an adiabatic reversible process is :
1 Positive
2 Zero
3 Negative
4 Constant
Explanation:
NCERT-XI-159
3 RBTS PAPER
162636
Which of the following quantity is not zero for element in standard state :
1 Enthalpy of formation
2 Entropy
3 Free energy of formation
4 All of these
Explanation:
Enthalpy of formation and free energy of formation are zero for an element at its standard state. \(S^{\circ}\) is not zero.
NCERT-XI-159
3 RBTS PAPER
162639
For the reaction \(A(s) \rightarrow B(s)+C(g)\) the value of \(\Delta \mathrm{H}=30.56 \mathrm{~kJ} \mathrm{~mol}^{-1}\) and \(\Delta \mathrm{S}=66 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\). The temperature at which the free energy change for the reaction will be zero is :
162634
In which of the following case entropy decreases:
1 Solid changing to liquid
2 Expansion of a gas
3 Crystals dissolve
4 Polymerisation
Explanation:
In polymerization, large no. of small units combine to form a big unit.
NCERT-XI-159
3 RBTS PAPER
162635
Entropy of an adiabatic reversible process is :
1 Positive
2 Zero
3 Negative
4 Constant
Explanation:
NCERT-XI-159
3 RBTS PAPER
162636
Which of the following quantity is not zero for element in standard state :
1 Enthalpy of formation
2 Entropy
3 Free energy of formation
4 All of these
Explanation:
Enthalpy of formation and free energy of formation are zero for an element at its standard state. \(S^{\circ}\) is not zero.
NCERT-XI-159
3 RBTS PAPER
162639
For the reaction \(A(s) \rightarrow B(s)+C(g)\) the value of \(\Delta \mathrm{H}=30.56 \mathrm{~kJ} \mathrm{~mol}^{-1}\) and \(\Delta \mathrm{S}=66 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\). The temperature at which the free energy change for the reaction will be zero is :
162634
In which of the following case entropy decreases:
1 Solid changing to liquid
2 Expansion of a gas
3 Crystals dissolve
4 Polymerisation
Explanation:
In polymerization, large no. of small units combine to form a big unit.
NCERT-XI-159
3 RBTS PAPER
162635
Entropy of an adiabatic reversible process is :
1 Positive
2 Zero
3 Negative
4 Constant
Explanation:
NCERT-XI-159
3 RBTS PAPER
162636
Which of the following quantity is not zero for element in standard state :
1 Enthalpy of formation
2 Entropy
3 Free energy of formation
4 All of these
Explanation:
Enthalpy of formation and free energy of formation are zero for an element at its standard state. \(S^{\circ}\) is not zero.
NCERT-XI-159
3 RBTS PAPER
162639
For the reaction \(A(s) \rightarrow B(s)+C(g)\) the value of \(\Delta \mathrm{H}=30.56 \mathrm{~kJ} \mathrm{~mol}^{-1}\) and \(\Delta \mathrm{S}=66 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\). The temperature at which the free energy change for the reaction will be zero is :
162634
In which of the following case entropy decreases:
1 Solid changing to liquid
2 Expansion of a gas
3 Crystals dissolve
4 Polymerisation
Explanation:
In polymerization, large no. of small units combine to form a big unit.
NCERT-XI-159
3 RBTS PAPER
162635
Entropy of an adiabatic reversible process is :
1 Positive
2 Zero
3 Negative
4 Constant
Explanation:
NCERT-XI-159
3 RBTS PAPER
162636
Which of the following quantity is not zero for element in standard state :
1 Enthalpy of formation
2 Entropy
3 Free energy of formation
4 All of these
Explanation:
Enthalpy of formation and free energy of formation are zero for an element at its standard state. \(S^{\circ}\) is not zero.
NCERT-XI-159
3 RBTS PAPER
162639
For the reaction \(A(s) \rightarrow B(s)+C(g)\) the value of \(\Delta \mathrm{H}=30.56 \mathrm{~kJ} \mathrm{~mol}^{-1}\) and \(\Delta \mathrm{S}=66 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}\). The temperature at which the free energy change for the reaction will be zero is :