Why is activation energy required to start some reactions?
2 answers:
Answer: D.) to provide sufficient energy to keep a reaction going
Explanation:
Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.
A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more molecules can cross the energy barrier and convert to products. It is required for both endothermic and exothermic reactions.
The catalyst itself does not take part in the chemical reaction and is regenerated as such at the end.
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Answer:
(c)
Explanation:
The solubility product of a solid is the amount of solid dissociates into its respective ions in the solution. Thus more the value of the Ksp, the more is the salt soluble in the solvent.
So, Given that:-
The salt having highest value of Ksp is AgCN. So, it is most soluble.
Sulfuric acid: 
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