Heat of neutralization will be maximum for:
ACID (1 M) | Base (1M) | |
1. | 30 ml HCl | 70 ml NaOH |
2. | 40 ml HCl | 60 ml NaOH |
3. | 20 ml HCl | 80 ml NaOH |
4. | 80 ml HCl | 20 ml NaOH |
Text Solution
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First, 30 mL HCl is neutralized by 70 mL NaOH. But HCl is the limiting factor here so, overall 30 mL neutralization takes place.
In the 
is neutralized by 60 mL NaOH. But HCl is the limiting factor here, so overall 40 mL neutralization takes place.
In the 
is neutralized by 80 mL NaOH. But HCl is the limiting factor here so, overall 20 mL neutralization takes place.
In 4th, 80 mL HCl is neutralized by 20 mL 
is the limiting factor here so, overall 20 mL neutralization takes place.
Heat of neutralization will be more for reaction of 40 mL HCl and 60 mL NaOH.
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