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chemistry iPad 9:47 PM east.cengagenow.com owLv2] Online teaching and learni 40%

ID: 877152 • Letter: C

Question

chemistry iPad 9:47 PM east.cengagenow.com owLv2] Online teaching and learni 40% ) CengageBrain- My Home The specific heat capacity of waterice Time Remaining: 1:31:15 Exam 3B Which of the following has a standard enthalpy of formation value of zero at 25 C? Question 2 1 pt Question 3 Pt Question 4 Question 5 Question 6 1pt Question Question 8 Question 9 A. Cl) OB. CIs) Oc. Clg) OD. CI2(s) OE. Cg) f pt pt pt 1 pt 1 pt 1 pt Submit Answer Try Another Version 2 item attempts remaining Question 10 Question 11 Question 12 Question 13 pt 1 pt 1 pt 1 pt Question 14 Question 15 Question 16 Question 17 f pt 1pt 1 pt 1 pt f pt 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

The standard enthalpy of formation of a compound is defined as the enthalpy change that accompanies a reaction in which one mole of the pure compound in its standard state is formed from its elements also in their standard states.

The standard enthalpy of formation of an element from itself is zero.

Hence, the standard enthalpy of formation of Cl2(g) (option E) is zero at 25 0C.