Reaction Quotient

Q. What is the relation between eqilibrium constant and the stability of reactants? Justify.

Q.

In an experiment, the following reaction takes place.​

​C(s) + O₂(g) $\to$ CO₂(g)​

What is the amount of CO₂ gas produced when 12 g of carbon reacts with 48 g of oxygen? ​

1. 48 g​
2. 44 g​
3. 12 g​
4. 32 g​

Q. The standard Gibbs energy channge at 300 K for the reaction, $2A\rightleftharpoons B+C$ is 2494. 2J. At a given time, the composition of the reaction mixture is $\left[A\right]=\frac{1}{2},\left[B\right]=2$ and $\left[C\right]=\frac{1}{2}.$ The reaction proceeds in the (R = 8.314JK / mol, e = 2.718)

1. forward direction because $Q>K_c$
2. reverse direction because $Q>K_c$
3. forward direction because $Q>K_c$
4. reverse direction because $Q<K_c$

Q. A natural gas may be assumed to be a mixture of methane and ethane only. On complete combustion of $10$ litre of gas at STP, the heat evolved was $474.6kJ$. Assuming $\Delta H_{comb}{CH}_4=-894kJ{mol}^{-1}$ and $\Delta H_{comb}{C}_2{H}_6=-1500kJ$.
Calculate the percentage composition of the mixture by volume.