What is endothermic reactions?

What are endothermic reactions?

What are exothermic reactions?

What is photochemical reaction ?

Why is the sign of DeltaH negative for an exothermic reaction and why is it positive for an endothermic reaction?

The values of equilibrium constant (K) of a reaction at 25^(@)C and 50^(@)C are 2xx10^(-4) and 2xx10^(-2) respectively. Is the reaction an exothermic or an endothermic reaction?

What do you mean by temperature co-efficiency for a reaction? Draw the enrgy profile diagram for endothermic reaction. What is the role of positive catalyst for a chemical reaction.

What sign (+ or -) of entropy change in an endothermic reaction makes the reaction non-spontaneous at any temperature?

For the following endothermic reactions: PCl_(5)hArrPCl_(3)(g)+Cl_(2)(g) (a) At constant temperature, what will be the effect of pressure? (b) At constant volume, what will be the effect of addition of chlorine gas and nitrogen gas on the position of equilibrium?

I_(2)(g)hArr 2I(g) , Discuss the effect of the following changes on equilibrium of the mentioned endothermic reaction: (i) temperature is increased. (ii) pressure is increased at constant temperature.