The following reaction is similar to the breathing cycle of plants: 4KO2(s)Â Â + 2CO2 (g)Â Â Â®2K2CO3 (s)...

Free

60.1K

Verified Solution

Question

Chemistry

The following reaction is similar to the breathing cycle ofplants:
4KO2(s)Â Â + 2CO2 (g)Â Â Â®2K2CO3 (s) + 3O2 (g)Calculate change inH for the above reaction from the followingdata:
change in H (kcal)
K(s)Â Â + O2 (g)Â Â Â®KO2(s)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -134.0
KOH(s)Â Â + CO2 (g)Â Â Â®KHCO3(s)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -33.5
2KHCO3(s) Â®CO2(g) + H2O(g) + K2CO3(s) +33.0
2K(s) + 2H2O(g)Â Â Â®2KOH(s) + H2(g)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -88.0
H2 (g)Â Â + 1/2O2(g)Â Â Â®H2O(g)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -57.8

Answer & Explanation Solved by verified expert

4.0 Ratings (405 Votes)

4*[ KO2 (s)Â Â Â -----> K(s)Â Â + O2 (g) ]Â Â Â Â Â Â Â Â Â Â Â Â Â DH1 = 4*+134

2*[2KHCO3(s)Â Â ------> CO2(g) + H2O(g) + K2CO3(s)]Â Â Â Â DH2 = 2*+33.0

4*[KOH(s)+ CO2(g) ---> KHCO3(s)Â Â ]Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â DH3 = 4*-33.5

2*[2K(s) + 2H2O(g) ---> 2KOH(s) + H2 (g) ]Â Â Â Â Â Â Â Â Â Â DH4 = 2*-88.0

2*[H2 (g) + 1/2O2(g) ----> H2O(g)Â Â ]Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â DH5 = 2*-57.8
-----------------------------------------------------------------------
4KO2(s)Â Â + 2CO2 (g) ---> 2K2CO3 (s) + 3O2 (g) DH = DH1+DH2+DH3+DH4+DH5
------------------------------------------------------------------------

DH = 4*134+2*33.0+4*-33.5+2*-88.0+2*-57.8

Â Â Â Â = 176.4 KJ

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member