Chemical Equilibrium

The plot of $\log k_f$ versus $1 / T$ for a reversible reaction $\mathrm{A}(\mathrm{g}) \rightleftharpoons \mathrm{P}(\mathrm{g})$ is shown.
Pre-exponential factors for the forward and backward reactions are $10^{15} \mathrm{~s}^{-1}$ and $...

Consider the reaction,A \(\rightleftharpoons\) Bat 1000 K. At time t', the temperature of the system was increased to 2000 K and the system was allowed to reach equilibrium. Throughout this experiment the partial pressure of A was maintai...

For the following reaction, the equilibrium constant Kc at 298 K is 1.6 \(\times\) 1017.Fe2+(aq) + S2-(aq) ⇌ FeS(s)When equal volumes of 0.06 M Fe2+(aq) and 0.2 M S2\(-\)(aq)solutions are mixed, the equilibrium concentration of Fe2+(aq)...

A closed tank has two compartments \(A\) and \(B,\) both filled with oxygen (assumed to be ideal gas). The partition separating the two compartments is fixed and is a perfect heat insulator (Figure \(1.\)). If the old partition is replaced ...

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Thermal decomposition of gaseous X2 to gaseous X at 298 K takes place according to the following equations:
X2 (g) \(\leftrightharpoons\) 2X (g)
The standard reaction Gibbs energy, \(\Delta _rG^o\), of this reaction is positive. A...

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Thermal decomposition of gaseous X2 to gaseous X at 298 K takes place according to the following equations:
X2 (g) \(\leftrightharpoons\) 2X (g)
The standard reaction Gibbs energy, \(\Delta _rG^o\), of this reaction is positive. A...

The thermal dissociation equilibrium of CaCO3(s) is studied under different conditions
CaCO3(s) \(\leftrightharpoons\) CaO(s) + CO2(g). For this equilibrium, the correct statement(s) is (are)

The equilibrium
\(2C{u^+} \to Cu^\circ + C{u^{2+}}\)
In aqueous medium at 25\(^\circ\)C shifts towards the left in the presence of

Statement 1 : For every chemical reaction at equilibrium, standard Gibbs energy of reaction is zero.
and
Statement 2 : At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy.

\(\mathrm{N}_2+3 \mathrm{H}_2 \to 2 \mathrm{NH}_3\)
Which is the correct statement if $\mathrm{N}_2$ is added at equilibrium condition?

$$ \begin{aligned} & \mathrm{Ag}^{+}+\mathrm{NH}_3 \quad\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+} \\ & k_1=3.5 \times 10^{-3} \\ & {\left[\mathrm{Ag}\left(\mathrm{NH}_3\right]^{+}+\mathrm{NH}_3 \quad\left[\mathrm{Ag}\left(\math...

When 3.06 g of solid NH4HS is introduced into a two litre evacuated flask at 27o C, 30% of the solid decomposes into gaseous ammonia and hydrogen sulphide. (i) Kc and Kp for the reaction at 27o C (ii) What would happen to the equilibrium wh...