Question

Which of the answer choices correctly describes an action that will increase the solubility of a solid solute in water?

cool the solution

increase the pressure

heat the solution

decrease the pressure

Examine the statement.
The energy required to break the bonds of the reactants in a chemical reaction is more than the energy used to form the products.
Which answer choice correctly identifies a characteristic of the reaction in the description?

endothermic

exothermic

a slow reaction rate

a fast reaction rate

Answer 1

And your thoughts?

Answer 2

I think the first one is C and the second one B

Answer 3

I mean first one c and the second one c

Answer 4

I agree with 1 but not 2.

Answer 5

was the first answer for question 2 wrong as well

Answer 6

Is it d?

Answer 7

Yes, the first answer was wrong, too.
AB = A + B + energy ......exothermic
AB + energy ==> A + B....endothermic