Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
When a reaction is endothermic,
Enthalpy change, ΔH is negative
Heat content of a product is less than the heat content of a reactant
Heat content of reactants is less than the heat content of product
The reaction is non-spontaneous
Correct answer is C
An endothermic reaction is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur.
The general gas equation was deprived from______?
Boyle's and Gay Lussac's laws
Boyle's and Graham's laws
Boyle's and Charles' laws
Dalton's atomic theory
Correct answer is C
No explanation has been provided for this answer.
2
3
4
6
Correct answer is A
From the reaction, the total charge on the left side = The total charge on the right side
-2 + 2 + y = -2 : y = -2 : y = 2