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In laboratory ammonia is prepared by heating
- a)Calcium cyanamide with water
- b)Ammonium chloride with sodium hydroxide
- c)Ammonium chloride with calcium hydroxide
- d)Both B and C
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
In laboratory ammonia is prepared by heatinga)Calcium cyanamide with w...
2(NH4Cl) + Ca(OH)2 → (CaCl)2 + 2(NH3) + 2(H2O)
Hence C is correct.
Hence C is correct.
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In laboratory ammonia is prepared by heatinga)Calcium cyanamide with w...
Introduction:
In the laboratory, ammonia (NH3) can be prepared by various methods. One of the commonly used methods is the reaction between ammonium chloride (NH4Cl) and calcium hydroxide (Ca(OH)2). This reaction is represented by the following equation:
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
Explanation:
The correct answer to the question is option 'C', which states that ammonia can be prepared by reacting ammonium chloride with calcium hydroxide. Let's understand why this is the correct answer:
1. Reaction between Ammonium Chloride and Calcium Hydroxide:
When ammonium chloride (NH4Cl) is heated with calcium hydroxide (Ca(OH)2), it undergoes a double displacement reaction. The ammonium ion (NH4+) is exchanged with the calcium ion (Ca2+), resulting in the formation of ammonia gas (NH3), calcium chloride (CaCl2), and water (H2O). The balanced chemical equation for this reaction is:
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
2. Explanation of Other Options:
a) Calcium cyanamide with water: This reaction does not produce ammonia. Calcium cyanamide reacts with water to form calcium carbonate (CaCO3) and ammonia gas (NH3). The reaction is represented as:
CaCN2 + 3H2O → CaCO3 + 2NH3
b) Ammonium chloride with sodium hydroxide: This reaction produces sodium chloride (NaCl), water (H2O), and ammonia gas (NH3). The balanced chemical equation for this reaction is:
NH4Cl + NaOH → NaCl + NH3 + H2O
c) Ammonium chloride with calcium hydroxide: As explained earlier, this reaction produces ammonia gas (NH3), calcium chloride (CaCl2), and water (H2O). The balanced chemical equation for this reaction is:
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
Therefore, option 'C' is the correct answer as it represents the reaction that produces ammonia by heating ammonium chloride with calcium hydroxide.
Conclusion:
Ammonia can be prepared in the laboratory by heating ammonium chloride with calcium hydroxide. This reaction results in the formation of ammonia gas, calcium chloride, and water. The balanced chemical equation for this reaction is 2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O.
In the laboratory, ammonia (NH3) can be prepared by various methods. One of the commonly used methods is the reaction between ammonium chloride (NH4Cl) and calcium hydroxide (Ca(OH)2). This reaction is represented by the following equation:
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
Explanation:
The correct answer to the question is option 'C', which states that ammonia can be prepared by reacting ammonium chloride with calcium hydroxide. Let's understand why this is the correct answer:
1. Reaction between Ammonium Chloride and Calcium Hydroxide:
When ammonium chloride (NH4Cl) is heated with calcium hydroxide (Ca(OH)2), it undergoes a double displacement reaction. The ammonium ion (NH4+) is exchanged with the calcium ion (Ca2+), resulting in the formation of ammonia gas (NH3), calcium chloride (CaCl2), and water (H2O). The balanced chemical equation for this reaction is:
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
2. Explanation of Other Options:
a) Calcium cyanamide with water: This reaction does not produce ammonia. Calcium cyanamide reacts with water to form calcium carbonate (CaCO3) and ammonia gas (NH3). The reaction is represented as:
CaCN2 + 3H2O → CaCO3 + 2NH3
b) Ammonium chloride with sodium hydroxide: This reaction produces sodium chloride (NaCl), water (H2O), and ammonia gas (NH3). The balanced chemical equation for this reaction is:
NH4Cl + NaOH → NaCl + NH3 + H2O
c) Ammonium chloride with calcium hydroxide: As explained earlier, this reaction produces ammonia gas (NH3), calcium chloride (CaCl2), and water (H2O). The balanced chemical equation for this reaction is:
2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O
Therefore, option 'C' is the correct answer as it represents the reaction that produces ammonia by heating ammonium chloride with calcium hydroxide.
Conclusion:
Ammonia can be prepared in the laboratory by heating ammonium chloride with calcium hydroxide. This reaction results in the formation of ammonia gas, calcium chloride, and water. The balanced chemical equation for this reaction is 2NH4Cl + Ca(OH)2 → 2NH3 + CaCl2 + 2H2O.
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In laboratory ammonia is prepared by heatinga)Calcium cyanamide with waterb)Ammonium chloride with sodium hydroxidec)Ammonium chloride with calcium hydroxided)Both B and CCorrect answer is option 'C'. Can you explain this answer?
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