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Grade: 10
        
plz explain properly.. i am new to this concept.. thank you
2 months ago

Answers : (2)

Omkar Doiphode
24 Points
							
What is concentration?
Concentration: concentraion is amount of solute present in per unit of soulution. 
 
The amount of solute/solution can be represented by anything (weight,mole,volume). Thus we can represent concentration in many ways e.g Molarity, Molality, Mole fraction etc
 
 
what is molarity?
molarity is "number of moles of solute are present in 1 litre of solution
Molarity = \frac{no. of moles of solute}{volume of solution (litre)}
 
What is Normality?
normality or equivalent concentration is molar concentration divided by equivalence factor or n factor
Normality = \frac{C}{n}
 
Note: here molar concentration is same as molarity
 
so
 Normality = Molarity *n                                    where n= n factor
 
What is n factor?
i will not go into deep, but remember n factor for acid is no. of H+ ions it can furnish
n factor of some acids are:
HCl = 1
H2SO4=2
HNO3=3
H3PO4=3
 
 
Now Coming to your Question:
Using the n factors and formula given, find molarity(i.e Concentration) of each acid with fiven Normality
 
Molarity = \frac{Normality}{n}
 
On calculating you will find correct option is b
 
2 months ago
Omkar Doiphode
24 Points
							 
What is concentration?
Concentration: concentraion is amount of solute present in per unit of soulution. 
 
The amount of solute/solution can be represented by anything (weight,mole,volume). Thus we can represent concentration in many ways e.g Molarity, Molality, Mole fraction etc
 
 
what is molarity?
molarity is "number of moles of solute are present in 1 litre of solution
Molarity = \frac{no. of moles of solute}{volume of solution (litre)}
 
What is Normality?
normality or equivalent concentration is molar concentration multiplied by equivalence factor or n factor
 
 
Note: here molar concentration is same as molarity
 
so
 Normality = Molarity *n                                    where n= n factor
 
What is n factor?
i will not go into deep, but remember n factor for acid is no. of H+ ions it can furnish
n factor of some acids are:
HCl = 1
H2SO4=2
HNO3=3
H3PO4=3
 
 
Now Coming to your Question:
Using the n factors and formula given, find molarity(i.e Concentration) of each acid with fiven Normality
 
Molarity = \frac{Normality}{n}
 
On calculating you will find correct option is b
2 months ago
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