Consider the following plot of potential energy E vs. reaction progress for an e

Question

Consider the following plot of potential energy E vs. reaction progress for an exothermic chemical reaction: Which, if any, of the lines indicated on the diagram represents the activation energy of the reverse reaction? A. line A B. line B C. line C D. line D E. The activation energy for the reverse reaction is not shown on the diagram. At 334 K, the vapor pressure of pure benzene (C_6H_6) is 0.526 atm and the vapor pressure of pure toluene (C_7H_8) is 0.188 atm. What is the total vapor pressure above a solution that contains 2.00 mol of benzene and 1.00 mol of toluene? A. 0.413 atm B. 0.714 atm C. 0.301 atm D. 1.240 atm E. 0.620 atm A 0.250 M aqueous solution of a weak monoprotic acid HX has pH 4.60. What is K_a for the acid HZ? A. 2.5 times 10^-5 B. 3.8 times 10^-6 C. 1-4 times 10^-8 D. 2.5 times 10^-9 E. 6.2 times 10^-10

Explanation / Answer

Ans 23 . D . Line D

Activation energy is the energy barrier that reactants need to cross in order to get converted into products .

An enzyme if present , lowers this barrier causing more number of reactant molecules to cross this barrier and form products.

The Activation energy of the forward reaction is indicated by line A and that of reverse reaction is indicated by line D.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---