For a reversible reaction involving two reactants,if the concentration of the reactants is doubled,the equilibrium constant will:

$A$ reversible reaction involving two reactants is at equilibrium. If the concentration of the reactants is doubled,the equilibrium constant will ......

For the reaction $2HI_{(g)} \rightleftharpoons H_{2(g)} + I_{2(g)}$,the equilibrium constant $K$ at room temperature is $2.85$,and at $698 \ K$ it is $1.4 \times 10^{-2}$. This indicates that:

How many types of equilibrium are there based on the proportion of reactant and product?

In which of the following cases does the reaction proceed towards completion?

The equilibrium constant for the reaction $N_{2(g)} + O_{2(g)} \rightleftharpoons 2 NO_{(g)}$ is $4 \times 10^{-4}$ at $2000 \ K$. In the presence of a catalyst, the equilibrium is attained $10$ times faster. Therefore, the equilibrium constant, in the presence of the catalyst at $2000 \ K$ is: