70. When the reaction A B+ C is studied, a plot of In[AJ, vs. time gives a strai

Question

70. When the reaction A B+ C is studied, a plot of In[AJ, vs. time gives a straight line with a negative slope. What is the order of the reaction? A) zero B) first C)second D) E) third More information is needed to determine the order. 71. What is the molecularity of the following elementary reaction? NHaCI(aq) + OH'(aq) NHCl(aq) + H20() A) unimolecular B) bimolecular C) termolecular D) tetramolecular E) The reaction order must be known before molecularity can be determined. Answer Questions 72-75 on a Scantron too based on the diagram below. 72. What is the type of this reaction? A. Endothermic B. Exothermic 73. Which letter represents activation energy without a catalyst? A B C D E 74. What happens to the activation energy once a catalyst is used? A B C D E 75. Which letter represents heat of the reaction? ABCDE

Explanation / Answer

Ans 70 : B) first

In the first order reactions , the rate of reaction is directly proportional to the first power of the reactant concentration , so the plot ln [A] vs time gives a straight line with a negative slope , i.e. -k.

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.