Question

A _____ (released, absorbed, taken, +,-) ΔH means that energy is______ (released, absorbed, taken, +,-) from a reaction.

Answer 1

A __"-"___  ΔH means that energy is_released_

Answer 2

Answer: The blanks are completed below.

Step-by-step explanation:

Enthalpy change of the reaction is defined as the difference in the potential energy of the products and the potential energy of the reactants. It is represented as
`\Delta H`

Mathematically,

`\Delta H_(rxn)=\Delta H_(products)-\Delta H_(reactants)`

When
`\Delta H` of the reaction is negative, then potential energy of the products is less than the potential energy of the reactants. So, energy is being released.

Thus, a +ve
`\Delta H` means that energy is released from a reaction.

When
`\Delta H` of the reaction is positive, then potential energy of the products is more than the potential energy of the reactants. So, energy is being absorbed.

Thus, a -ve
`\Delta H` means that energy is absorbed from a reaction.