Class 11 Exam > Class 11 Questions > Which of the following pairs of a chemical re...
Start Learning for Free
Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]
- a)Exothermic and increasing disorder
- b)Exothermic and decreasing disorder
- c)Endothermic and increasing disorder
- d)Endothermic and decreasing disorder
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Which of the following pairs of a chemical reaction is certain to resu...
Measure of disor der of a system is noth ing but Entropy. For a spontaneous reaction, ΔG < 0. As per Gibbs Helmnoltz equation, ΔG = ΔH – TΔS
Thus ΔG is –ve only When ΔH = –ve (exothermic) and ΔS = +ve (increasing disorder)
Thus ΔG is –ve only When ΔH = –ve (exothermic) and ΔS = +ve (increasing disorder)
Most Upvoted Answer
Which of the following pairs of a chemical reaction is certain to resu...
Free Test
FREE
| Start Free Test |
Community Answer
Which of the following pairs of a chemical reaction is certain to resu...
Spontaneous reactions are those reactions that occur on their own without any external influence. The spontaneity of a reaction depends on two factors: the change in enthalpy (ΔH) and the change in entropy (ΔS).
Exothermic and increasing disorder:
An exothermic reaction releases heat energy to the surroundings. If the reaction also results in an increase in disorder or randomness, then the ΔG (change in Gibbs free energy) will be negative, indicating that the reaction is spontaneous. This is because the increase in entropy outweighs the decrease in enthalpy. Examples of such reactions include combustion reactions and dissolution reactions.
Exothermic and decreasing disorder:
If the same exothermic reaction results in a decrease in disorder, then the ΔG will be positive, indicating that the reaction is non-spontaneous. This is because the decrease in entropy outweighs the decrease in enthalpy.
Endothermic and increasing disorder:
An endothermic reaction absorbs heat energy from the surroundings. If the reaction also results in an increase in disorder, then the ΔG will be positive, indicating that the reaction is non-spontaneous. This is because the increase in entropy does not outweigh the increase in enthalpy.
Endothermic and decreasing disorder:
If the same endothermic reaction results in a decrease in disorder, then the ΔG will be negative, indicating that the reaction is spontaneous. However, such reactions are rare since endothermic reactions usually result in an increase in disorder.
Therefore, it can be concluded that an exothermic reaction that results in an increase in disorder is certain to result in a spontaneous reaction.
Exothermic and increasing disorder:
An exothermic reaction releases heat energy to the surroundings. If the reaction also results in an increase in disorder or randomness, then the ΔG (change in Gibbs free energy) will be negative, indicating that the reaction is spontaneous. This is because the increase in entropy outweighs the decrease in enthalpy. Examples of such reactions include combustion reactions and dissolution reactions.
Exothermic and decreasing disorder:
If the same exothermic reaction results in a decrease in disorder, then the ΔG will be positive, indicating that the reaction is non-spontaneous. This is because the decrease in entropy outweighs the decrease in enthalpy.
Endothermic and increasing disorder:
An endothermic reaction absorbs heat energy from the surroundings. If the reaction also results in an increase in disorder, then the ΔG will be positive, indicating that the reaction is non-spontaneous. This is because the increase in entropy does not outweigh the increase in enthalpy.
Endothermic and decreasing disorder:
If the same endothermic reaction results in a decrease in disorder, then the ΔG will be negative, indicating that the reaction is spontaneous. However, such reactions are rare since endothermic reactions usually result in an increase in disorder.
Therefore, it can be concluded that an exothermic reaction that results in an increase in disorder is certain to result in a spontaneous reaction.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Similar Class 11 Doubts
Top Courses for Class 11View all
Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer?
Question Description
Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. 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 Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. 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 Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer?.
Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. 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 Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. 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 Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. 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 Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction? [2005]a)Exothermic and increasing disorderb)Exothermic and decreasing disorderc)Endothermic and increasing disorderd)Endothermic and decreasing disorderCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup