Class 11 Exam  >  Class 11 Questions  >  Direction (Q. Nos. 14 -15) This section conta... Start Learning for Free
Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing  theory, experiments, data etc. three Questions related to paragraph have been  given.Each question have only one correct answer among the four given  ptions  (a),(b),(c),(d).
Based on the following thermochemical data of the given process, answer the questions.

 
Q. Bond energy of (C— C) bond is 
  • a)
    100 kcal mol-1
  • b)
    -82 kcalmol-1
  • c)
    78 kcal mol-1
  • d)
    82 kcal mol-1
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Direction (Q. Nos. 14 -15) This section contains a paragraph, wach des...
For C3H8 : 3C + 4H2 → C3H8 ; ∆H1
For C3H8 : 2C + 3H2 → C2H6 ; ∆H2
∆H1 = -[2(C-C)+8(C-H)]+[3Cs→g+4(H-H)]     -(I)
∆H2 = -[1(C-C)+6(C-H)]+[2Cs→g+3(H-H)]     -(2)
Let bond energy of C-C be x kcal and bond energy of C-H be y  kcal.
From eqn I and 2
 ∆H1 = -[2x+8y]+[3×172+4×104]     -(3)
∆H2 = -[x+6y]+[2×172+3×104]     -(4)
Also given, C+O2 → CO2; ∆H = -94.0 kcal     -(5)
H2 + ½ O2 → H2O ; ∆H = -68.0 kcal      -(6)
C2H6 + 7/2 O2 → 2CO2 + 3H2O ; ∆H = -372 kcal     -(7)
C3H8 + 5O2  → 3CO2 + 4H2O ; ∆H = -530 kcal     -(8)
By inspection method,  2 × (5) + 3 × (6) - (7) gives
2C + 3H2 → C2H6 ; ∆H2 = -20 kcal
And  3×(5) + 4×(6) -(8)
3C + 4H2 → C3H8 ; ∆H3 = -20 kcal 
By eqn. (3), (4), (9) and (10)
x+6y = 676
2x+8y = 956
x = 82 kcal and y = 99 kcal
View all questions of this test
Explore Courses for Class 11 exam

Top Courses for Class 11

Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer?
Question Description
Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer?.
Solutions for Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11. Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Direction (Q. Nos. 14 -15) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).Based on the following thermochemical data of the given process, answer the questions.Q.Bond energy of (C— C) bond isa)100 kcal mol-1b)-82 kcalmol-1c)78 kcal mol-1d)82 kcal mol-1Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 11 tests.
Explore Courses for Class 11 exam

Top Courses for Class 11

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev