Answer to Question #60115 in Physical Chemistry for joseph orobiyi

Question

16 Predict the signs of $\DeltaH$ and $\DeltaS$ for the evaporation of
water at $35^ºC$.
$\DeltaH$ > 0 and $\Deltas$ > 0
$\DeltaH$ > 0 and $\Deltas$ < 0
$\DeltaH$ < 0 and $\Deltas$ > 0
$\DeltaH$ < 0 and $\Deltas$ < 0



17 Every type of chemical bond contains a certain amount of energy. The
total bond energy, which is essentially equivalent to the total
potential energy of the system, is a quantity known as:
entropy.
kinetic energy.
enthalpy.
free energy.



18 A reaction with a negative value of ΔG is said to be
Spontaneous
Non-spontaneous
At equilibrium
Reversible



19 If a process is exothermic and not spontaneous, then what must be true?
$\DeltaS$ > 0
$\DeltaS$ < 0
$\DeltaH$ > 0
$\DeltaG$ = 0



20 In a reaction in which the rate of the reverse reaction is equal to
the rate of the forward reaction, a state of ____________ is attained.
total entropy
thermodynamics
dynamic equilibrium
product reversibility

Answer 1

16 ∆H > 0 and ∆S > 0
17 enthalpy.
18 Spontaneous
19 ∆S < 0
20 dynamic equilibrium