$$\Delta G$$ in $$A{g_2}O \to 2\,Ag + \frac{1}{2}{O_2}$$ at a certain temperature is $$ - 10\,kJ\,mo{l^{ - 1}}.$$ Pick the correct statement
A.
$$A{g_2}O$$ decomposes to $$Ag$$ and $${O_2}$$
B.
$$Ag$$ and $${O_2}$$ combines to form $$A{g_2}O$$
C.
Reaction is in equilibrium
D.
Reaction does not take place
Answer :
$$A{g_2}O$$ decomposes to $$Ag$$ and $${O_2}$$
Solution :
$$\Delta G = - ve\,{\text{means the process is spontaneous}}{\text{.}}$$
Releted MCQ Question on Physical Chemistry >> Chemical Thermodynamics
Releted Question 1
The difference between heats of reaction at constant pressure and constant volume for the reaction : $$2{C_6}{H_6}\left( l \right) + 15{O_{2\left( g \right)}} \to $$ $$12C{O_2}\left( g \right) + 6{H_2}O\left( l \right)$$ at $${25^ \circ }C$$ in $$kJ$$ is
$${\text{The}}\,\Delta H_f^0\,{\text{for}}\,C{O_2}\left( g \right),\,CO\left( g \right)\,$$ and $${H_2}O\left( g \right)$$ are $$-393.5,$$ $$-110.5$$ and $$ - 241.8\,kJ\,mo{l^{ - 1}}$$ respectively. The standard enthalpy change ( in $$kJ$$ ) for the reaction $$C{O_2}\left( g \right) + {H_2}\left( g \right) \to CO\left( g \right) + {H_2}O\left( g \right)\,{\text{is}}$$