# Which of the following statements is true if HI is formed in the following reaction?

Which of the following statements is true if HI is formed in the following reaction?

$$\ce{H2(g) + I2(g) -> 2HI(g)}$$

a. There are no collisions between the reactants in the reaction.

b. All of the collisions between reactants have enough energy to overcome the activation energy.

c. Some of the collisions between reactants have enough energy to overcome the reaction mechanism.

d. Some of the collisions of the reactants have enough energy to overcome the activation energy.

I think it is d because I think it has enough energy to overcome the AE due to the equation, but I am not sure.

• Why do you think D is correct? Please include that in the question as well. Welcome to our site! – William R. Ebenezer Jun 17 '19 at 4:15
• I think it has enough energy to overcome the AE due to the equation. – Athena Jun 17 '19 at 5:25
• @Athena You really can't judge the AE by looking at the equation; but option d is still a safe bet,as per the modern collision theory. – Yusuf Hasan Jun 17 '19 at 5:55
• Yes i know the equation is not the safest but im wondering is that how you would answer it? If not can you teach me why not. Thank you – Athena Jun 17 '19 at 6:54
• Both B and D can be true, C does not make sense; 'energy to overcome reaction mechanism' is nonsense. So the question is ambiguous, B, D could each lead to product – porphyrin Jul 6 '19 at 19:16