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Q.

Given below are some imbalance equations. Balance those chemical equations:


1) Question Image 


2) Question Image 


3) Question Image 


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a

Question Image

b

Question Image

c

Question Image

d

All of these 

answer is D.

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Detailed Solution

Concept- To find the difference in the number of atoms on the reactants and products sides inspection approach is used. The number of atoms in a reaction must be constant and equal on both the reactants and product sides due to matter conservation. Multiply the molecules by the relevant coefficients based on differences. Carry on like way until all of the atoms are balanced.
The complete balanced equation for Question Image is 2HN O 3 +Ca (OH) 2 →Ca (N O 3 ) 2 +2 H 2 O  
The complete balanced equation for Question Imageis 2NaOH+ H 2 S O 4 →N a 2 S O 4 + H 2 O  
The complete balanced equation for  Question Image is Question Image .
The complete balanced equation for Question Image is Question Image.
Hence, the correct option is 4.
 
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