What do your observations in Step 4 and 5 tell you about the sign of ΔH in Reaction 4?

ΔH is _____ for an exothermic reaction.

Energy change in a chemical reaction is represented by the symbol __________________.Question 4AnswerA.HB.ΔTC.ΔHD.ΔE

For the following reaction mechanism use the diagram below to answer each question (5 marks) 16. The overall reaction in the forward direction is endothermic OR exothermic. (circle one) 17. The 2nd step of the reaction mechanism in the forward direction is endothermic OR exothermic. (circle one) 18. _________________ is the reaction intermediate. 19. The ΔH for the overall reaction in the forward direction is ________ kJ. (state the value) 20. The slowest step in the forward direction is step 1 OR step 2. (circle one) Ep (kJ) Reaction Progress

Consider the following spontaneous exothermic reaction :3X2(g) → 2X3(g)What are the sign of ΔH, ΔS, and ΔG for the reaction.+, +, ++, –, ––, +, ––, –, –

he signs of ΔG, ΔH, and ΔS at 25°C are shown below for three reactions.reaction ΔG ΔH ΔSI. - + +II. - - +III. - - -Which reaction could go in the reverse direction at high temperature?Group of answer choicesIIIIIII and II