chemistry iPad 9:46 PM east.cengagenow.com owLv2] Online teaching and learni 40%

Question

chemistry iPad 9:46 PM east.cengagenow.com owLv2] Online teaching and learni 40% ) CengageBrain- My Home The specific heat capacity of waterice Time Remaining: 1:31:29 Exam 3B Given that Question 2 1 pt Question 3 Pt Question 4 Question 5 Question 6 1pt Question Question 8 Question 9 0(g) + 2e- Of(g)AH = 702 kJ the enthalpy change for the reaction represented by the equation 0(g) + e- 0'(g) is: OA. -844 kJ OB. -560 kJ Oc.ok OD. 844 kJ OE. 560 kJ f pt pt pt 1 pt 1 pt 1 pt Question 10 Question 11 Question 12 Question 13 pt 1 pt 1 pt 1 pt Submit Answer Try Another Version 2 item attempts remaining Question 14 Question 15 1 pt 1 pt 1 pt f pt Question 16 Question 17 Question 18 Question 19 Question 20 pt 6/20 items Due Jun 29 at 11:55 PM Previous Next Finish Assignment Email Instructor Cengage Learning I Cengage Technical Support

Explanation / Answer

Ans: D) 844KJ

Explanation:

According to Hess's Law:

We know that if you convert reactants A into products B, the overall enthalpy change will be exactly the same whether you do it in one step or two steps or however many steps.

In the the given example the enthalpy change will be same if O2-(g) formed from O(g) in eigther through one step or two steps

So 702KJ = -142KJ + X

X = 702+142 = 844 KJ

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

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