Problem 95
What will be the signs of \(\Delta H\) and \(\Delta S\) when \(\mathrm{NaOH}\) is dissolved in water? \(\begin{array}{ll}\Delta H & \Delta S \\ \text(a) - & \- \\ \text(c) - & \+ & \end{array}\) \(\begin{array}{ll}\Delta H & \Delta S \\ \text(b) + & \- \\ \text(d) + & +\end{array}\)
Problem 96
At absolute zero, the entropy of a pure crystal is zero. This is (a) first law of thermodynamics (b) second law of thermodynamics (c) third law of thermodynamics (d) zeroth law of thermodynamics.
Problem 97
At dynamic equilibrium the reaction on both sides occur at the same rate and the mass on both sides of the equilibrium does not undergo any change. This condition can be achieved only when the value of \(\Delta G\) is (a) \(-1\) (b) \(+1\) (c) \(+2\) (d) 0
Problem 98
The equilibrium constant for a reaction is \(10 .\) What will be the value of \(\Delta G^{\circ}\) at \(300 \mathrm{~K} ?\) (a) \(-5.74 \mathrm{~kJ}\) (b) \(-574 \mathrm{~kJ}\) (c) \(+11.48 \mathrm{~kJ}\) (d) \(+5.74 \mathrm{~kJ}\)
Problem 99
A reaction attains equilibrium state under standard conditions, then what is incorrect for this? (a) Equilibrium constant \(K=0\) (b) Equilibrium constant \(K=1\) (c) \(\Delta G^{\circ}=0\) and \(\Delta H^{\circ}=T \Delta S^{\circ}\) (d) \(\Delta G=0\) and \(\Delta H=T \Delta S\)
