If the reaction between two solutions has a positive enthalpy change, which of the following best describes the reaction?

- It is exothermic and heat is added to the system.
- It is endothermic and heat is added to the system.
- It is exothermic and heat is lost to the surroundings.
It is endothermic and heat is lost to the surroundings.

Question

If the reaction between two solutions has a positive enthalpy change, which of the following best describes the reaction?

- It is exothermic and heat is added to the system.
- It is endothermic and heat is added to the system.
- It is exothermic and heat is lost to the surroundings.
 It is endothermic and heat is lost to the surroundings.

anonymous · Answer

@Preetha @pooja195

cuanchi · Answer

what is your choice?

photon336 · Answer

Ask yourself: what does a positive enthalpy change tell you about a reaction?

anonymous · Answer

I believe it is the second choice

cuanchi · Answer

Yes!
positive enthalpy change , the reaction is endothermic, the final state or products have more energy than the reactants.

When you do the delta, or difference between final minus the initial state of the reaction  you get a positive value.