Answer:
Difference between Vapor and Gas
Usually, a vapour phase consists of a phase with two different substances at room temperature, whereas a gas phase consists of a single substance at a defined thermodynamic range, at room temperature
Explanation:
Answer is: <span>spontaneous in the reverse direction at all temperatures.
</span>Spontaneity can be determined using the change in <span>Gibbs free energy:
</span>ΔG = ΔH - TΔS.
ΔG changes in Gibbs free energy.
ΔH changes in enthalpy.
ΔS changes in entropy.
T is temperature.
<span>When ΔS < 0 (</span>negative entropy change)<span> and ΔH > 0 (endothermic reaction), the process is never spontaneous (</span>ΔG> 0), but the reverse process is always spontaneous.
The answer
the only equation which is balanced in an acidic solution is
<span>D. SO42- + 4H+ + 2e- ------------------ SO2(g) + 2H2O(l)
proof:
it is an acid solution because we can see H+, presence of acid in solution
</span><span>A. SO42- + 2H2O(l) + 2e- SO2(g) + 4OH-
B. SO42- + 4H+ SO2(g) + 4OH- + 2H2O(l) are basic solution, cause we can observe on these solutions the presence of OH-,
as for </span><span>SO42- + 2e- --------------------SO2(g) it is not an acid solution</span>
