Question

Question 1 If the enthalpy of a system increases, what value of ΔH describes the process? ΔH is positive. ΔH is negative. ΔH is zero ΔH increases.

Answer 1

If ΔH is positive, it means the process is endothermic. That it means it collects heat from the surroundings.

 If ΔH is negative, it means the process is exothermic. That it means it gives out heat to  the surroundings.

Sorry don't have the answer to the last part.

Answer 2

Answer: The correct answer is $\Delta H$ is positive.

Explanation:

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as $\Delta H$

The equation used to calculate enthalpy change is of a reaction is:  

$\Delta H_{rxn}=\sum [n\times \Delta H_{(product)}]-\sum [n\times \Delta H_{(reactant)}]$

As, the enthalpy of the system increases, it will lead to the formation of more products and thus making the enthalpy change of the reaction positive.

Hence, the correct answer is $\Delta H$ is positive.