Class 10 Exam > Class 10 Questions > When dilute hydrochloric acid is poured over ...
Start Learning for Free
When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is because
- a)Acids are corrosive
- b)Calcium oxide is formed
- c)Carbon dioxide is evolved
- d)Calcium carbonate is very reactive
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
When dilute hydrochloric acid is poured over powdered calcium carbonat...
When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is because carbon dioxide is evolved.
Free Test
FREE
| Start Free Test |
Community Answer
When dilute hydrochloric acid is poured over powdered calcium carbonat...
Effervescence Formation when Hydrochloric Acid is Poured over Calcium Carbonate
Effervescence refers to the formation of gas bubbles when a chemical reaction occurs. In the case of hydrochloric acid and calcium carbonate, the reaction produces carbon dioxide gas, which is responsible for the effervescence.
Acid-Base Reaction
When hydrochloric acid (HCl) is poured over powdered calcium carbonate (CaCO3), an acid-base reaction takes place. The acid (HCl) reacts with the base (CaCO3) to form a salt, water, and carbon dioxide gas.
Chemical Equation
The chemical equation for this reaction is as follows:
HCl + CaCO3 → CaCl2 + H2O + CO2
Explanation
- Acids are corrosive: While acids are generally corrosive, their corrosive nature is not directly related to the formation of effervescence. Therefore, option 'a' is incorrect.
- Calcium oxide is formed: Calcium oxide (CaO) is not formed in this reaction. Therefore, option 'b' is incorrect.
- Carbon dioxide is evolved: When hydrochloric acid reacts with calcium carbonate, carbon dioxide gas (CO2) is released. This gas escapes as bubbles, leading to the formation of effervescence. Therefore, option 'c' is correct.
- Calcium carbonate is very reactive: While calcium carbonate is reactive, its reactivity is not the primary reason for the formation of effervescence. Therefore, option 'd' is incorrect.
Conclusion
The correct answer is option 'c' - Carbon dioxide is evolved. When dilute hydrochloric acid is poured over powdered calcium carbonate, an acid-base reaction occurs, resulting in the release of carbon dioxide gas. This gas escapes as bubbles, leading to the formation of effervescence.
Effervescence refers to the formation of gas bubbles when a chemical reaction occurs. In the case of hydrochloric acid and calcium carbonate, the reaction produces carbon dioxide gas, which is responsible for the effervescence.
Acid-Base Reaction
When hydrochloric acid (HCl) is poured over powdered calcium carbonate (CaCO3), an acid-base reaction takes place. The acid (HCl) reacts with the base (CaCO3) to form a salt, water, and carbon dioxide gas.
Chemical Equation
The chemical equation for this reaction is as follows:
HCl + CaCO3 → CaCl2 + H2O + CO2
Explanation
- Acids are corrosive: While acids are generally corrosive, their corrosive nature is not directly related to the formation of effervescence. Therefore, option 'a' is incorrect.
- Calcium oxide is formed: Calcium oxide (CaO) is not formed in this reaction. Therefore, option 'b' is incorrect.
- Carbon dioxide is evolved: When hydrochloric acid reacts with calcium carbonate, carbon dioxide gas (CO2) is released. This gas escapes as bubbles, leading to the formation of effervescence. Therefore, option 'c' is correct.
- Calcium carbonate is very reactive: While calcium carbonate is reactive, its reactivity is not the primary reason for the formation of effervescence. Therefore, option 'd' is incorrect.
Conclusion
The correct answer is option 'c' - Carbon dioxide is evolved. When dilute hydrochloric acid is poured over powdered calcium carbonate, an acid-base reaction occurs, resulting in the release of carbon dioxide gas. This gas escapes as bubbles, leading to the formation of effervescence.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Similar Class 10 Doubts
Top Courses for Class 10View all
When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer?
Question Description
When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer?.
When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer?.
Solutions for When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When dilute hydrochloric acid is poured over powdered calcium carbonate, efflorescence are formed, it is becausea)Acids are corrosiveb)Calcium oxide is formedc)Carbon dioxide is evolvedd)Calcium carbonate is very reactiveCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup