The Question is from NEET guide , and it was created by the author A.RAMA NAGESWARARAO

Question

What is formed when calcium carbide reacts with Heavy water

A.RAMA NAGESWARARAO · Accepted Answer

## CORE INFORMATION
✓ **Answer**: A
## CONCEPT FRAMEWORK
	**Primary Concept**: Reaction of metal carbides with water.
	**Related Topics**: Hydrolysis, isotopes, chemical nomenclature.
	**Prerequisites**: Knowledge of basic chemical reactions and understanding of heavy water (D2O).
## SOLUTION PATHWAY
**Given Information**:
	* Reactants: Calcium carbide ($CaC_2$) and heavy water ($D_2O$)
	* Product is to be determined.
**Method & Steps**:
	1.	Identify the reaction type:
		Reasoning: Calcium carbide reacts with water (and heavy water) in a hydrolysis reaction, where water molecules break the bonds in the carbide molecule.
		Formula/Rule: General reaction: $CaC_2 + 2H_2O ightarrow Ca(OH)_2 + C_2H_2$. This is analogous to the reaction with heavy water.
	2.	Apply the reaction to heavy water:
		Working: Replacing $H$ with $D$ in the general reaction gives: $CaC_2 + 2D_2O ightarrow Ca(OD)_2 + C_2D_2$
		Key Point: The calcium part will form calcium deuteroxide, and the carbide part will form deuterated acetylene.
	3.	Identify the correct product:
		Result: The major organic product is $C_2D_2$ (deuterated acetylene).
		Verification: The reaction mechanism confirms the formation of $C_2D_2$.
## OPTION ANALYSIS
[A] ✓: $C_2D_2$ is the correct product of the reaction between calcium carbide and heavy water.
[B] :x: $CaD_2$ is not a direct product of this reaction. The calcium forms calcium deuteroxide, $Ca(OD)_2$
[C] :x: $Ca_2D_2O$ is not a known or expected product of this reaction.
[D] :x: $CD_2$ is not the correct product. It does not account for the two carbon atoms in calcium carbide.
## LEARNING AIDS
	**Common Mistakes**:
		1.[Error 1]: Forgetting to replace H with D in the formula. Focus on the isotopic substitution.
		2.[Error 2]: Confusing the products of reaction with normal water and heavy water. Remember that deuterium replaces hydrogen in the products.
	**Quick Tips**:
		1.[Helpful shortcut]: Recognize the similarity of the reaction with water.  The difference is only in the isotope.
		2.[Memory aid]: $CaC_2$ always forms a C2 product with water (or heavy water).

A.RAMA NAGESWARARAO · Answer

The correct Option is "${C_2}{D_2}$"

A.RAMA NAGESWARARAO · Answer

$Ca{D_2}$

A.RAMA NAGESWARARAO · Answer

$C{a_2}{D_2}O$

A.RAMA NAGESWARARAO · Answer

$C{D_2}$

NEET Questions

Select Subject

Question Tags

NEET Subjects

Our Bots

Company