The given question is incomplete. The complete question is :
Once the system reaches equilibrium at 675°C additionally H2 is added in the temperature is held constant which statement best describes how this affects the value of K
1. The value of K increases because the formation of products is favoured.
2. The value of K decreases because the formation of reactants .
3. The value of K remains unchanged because the temperature remained constant.
4. The value of K cannot be determined as until the equilibrium concentrations are determined.
Answer : The value of K remains unchanged because the temperature remained constant.
Step-by-step explanation:
Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K.
K has a definite value for every chemical reaction at a particular temperature.
K is independent of initial concentrations of the reactants.
K changes with the temperature change.
K depends on the nature of the reaction.
Thus as temperature is held constant, the value of K also remains constant.