Enthalpy of Neutralization of Strong Acid and Strong Base NEET Questions

Organic Chemistry - Principles of Practical Chemistry
Enthalpy of Neutralization of Strong Acid and Strong Base

Enthalpy of Neutralization of Strong Acid and Strong Base MCQ Questions


1.
Heat of neutralization of HCl by NH₄OH is -51.5 kJ/mol. The heat of ionization of NH₄OH is:
A.
+57.1 kJ/mol
B.
-5.6 kJ/mol
C.
-108.6 kJ/mol
D.
+5.6 kJ/mol
😑 View Answer Error
ANSWER :
D. +5.6 kJ/mol
2.
Why is enthalpy more useful than internal energy in neutralization at constant pressure?
A.
At constant P, q_p = ΔH directly (easy to measure with simple calorimeter)
B.
Internal energy is undefined
C.
Internal energy is too large
D.
Enthalpy is smaller
😑 View Answer Error
ANSWER :
A. At constant P, q_p = ΔH directly (easy to measure with simple calorimeter)
3.
Acid spilled on skin during the experiment should be:
A.
Ignored
B.
Immediately washed with plenty of water, then with dilute NaHCO₃ solution
C.
Treated with strong NaOH
D.
Wiped with cloth
😑 View Answer Error
ANSWER :
B. Immediately washed with plenty of water, then with dilute NaHCO₃ solution
4.
In the cooling curve method, the temperature is recorded:
A.
Only at the end
B.
Only at maximum
C.
At constant intervals during reaction only
D.
At regular intervals before, during, and after mixing
😑 View Answer Error
ANSWER :
D. At regular intervals before, during, and after mixing
5.
Which of the following gives the lowest magnitude of enthalpy of neutralization (least exothermic)?
A.
Weak acid + Weak base (CH₃COOH + NH₄OH ≈ -50.4 kJ/mol)
B.
Weak acid + Strong base
C.
Strong acid + Strong base
D.
Strong acid + Weak base
😑 View Answer Error
ANSWER :
A. Weak acid + Weak base (CH₃COOH + NH₄OH ≈ -50.4 kJ/mol)
6.
Why does specific heat of dilute solution closely match that of pure water?
A.
All solutions are equal
B.
Solution is mostly water (>95% by mass for dilute); solute contribution is small
C.
Salt has same specific heat
D.
Dilution doesn't matter
😑 View Answer Error
ANSWER :
B. Solution is mostly water (>95% by mass for dilute); solute contribution is small
Prev Next page