uestion 4 (2 points) Listen For the formation of one mole nitrosyl chloride, the heat of reaction is -38 kJ. NO(g + ½ Cl2(g) → NOCI(g). If the activation energy for the forward reaction is 62 kJ, what is the activation energy if the reaction was to reverse? 38 kJ 62 kJ 76 kJ 100 kJ 138 kJ Question 5 (2 points) Listen ✓ Saved If the order for NO is two and that for hydrogen is one what is the rate law?

# 3 E D C Energy diagrams for two reactions are shown. Macmillan Learning Energy (kJ/mol) e 150 100 50- What is the heat of reaction for Reaction A? AHrxnA = 4 FER 20 What is the activation energy for Reaction A? R F V Reaction progress Reaction A 5 T G Search or type URL G B tv 6 MacBook Pro Y Ⓒ H 201 7 N U S J kJ mol 00 8 M I Energy (kJ/mol) 150 T 100- NIMZAO ✪ 50 What is the heat of reaction for Reaction B? AHxnB = What is the activation energy for Reaction B? K ( - O 9 < O I * ) -C O Reaction progress Reaction B L command ») P . V = : P W ; 242) { option [ SEC e = ? O kJ mol 1 delete retu

Energy diagrams for two reactions are shown. 150 150 100 100 50- 50- Reaction progress Reaction progress Reaction A Reaction B What is the heat of reaction for Reaction A? What is the heat of reaction for Reaction B? AHrxn A kJ AHrxn B kJ mol mol What is the activation energy for Reaction A? What is the activation energy for Reaction B? kJ kJ Ea rxn A = Ea rxn B = mol mol Energy (kJ/mol)

The energy of activation for the decomposition of 2 mol of HI to H2 and I2 in the gas phase is 185 kJkJ. The heat of formation of HI(g) from H2(g) and I2(g) is -5.65 kJ/mol     Part A Find the energy of activation for the reaction of 1 mol of H2 and 1 mol of I2 in the gas phase.

+ Twychoad Energy (kJ/mol) -50 +37.5 25 12.5 Based on the reaction energy diagram provided, which of the following statements is incorrect (false)? Reaction Profile Question 15 of 15 3 A) The activation energy is 12.5 kJ/mol. B) The energy change (AE or AH or AG) for the reaction is 25 kJ/mol. C) The reaction is exothermic. D) The reactants are at the position labeled 1. E) The products are at the position labeled 3. Submit

6:47 PM Sun Feb 5 The activation energy for a particular reaction is 102 kJ/mol. If the rate constant is 1.35 x 104 s¹ at 305 K, what is the rate constant at 273 K? Tap here or pull up for additional resources 2 2 #3 $ 4 → Question 41 of 50 % < 60 & 7 8

Question 2 of 19 A substance decomposes with a rate constant of 9.05 x 104 s¹. How long does it take for 14.5% of the substance to decompose? Tap here or pull up for additional resources MacBook Air 1 2 4 5 7 8 +/- 3 6 9 0 S Submit x с x 100

7. Reactions A and B were studied and found to produce the given energy diagrams. 150 150 Energy 100 (kJ/mol) 100 Energy (kJ/mol) 50 50 Reaction progress Reaction progress Reaction A Reaction B A third reaction, C was studied with a measured activation energy of 55 KJ/mol. Assume all reactions take place at the same temperature. Reaction A is slowest a. b. Reaction B is slowest c. Reaction C is slowest d. All reactions happen at the same rate.

What is the activation energy of the forward reaction? Question 15 options:   200 kJ   150 kJ   250 kJ   100 kJ

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