MCQ- 21
The born-Haber cycle is used to determine the lattice energy of
A. Covalent Solid
B. Ionic Solid
C. Molecular Solid
D. Metallic Solid
Answer: B
MCQ- 22
If 8g of methane is burned in excess of oxygen then the standard enthalpy of combustion is
A. Increased to two times
B. Reduced to half
C. Increased to four times
D. Reduced to four times.
Answer: B
MCQ- 23
The system becomes more stable if it
A. Gains energy
B. Does not loses energy
C. Loses energy
D. Have constant energy
Answer: C
MCQ- 24
Which of the following is a correct relationship at constant pressure|
A. ∆H = qp
B. ∆E = qv
C. ∆H = qv
D. ∆E = qp
Answer: A
MCQ- 25
Which of the following is the correct representation for the calculation of lattice energy?
A. ∆Hlatt. = ∆Hf – ∆Hx
B. ∆Hlatt. = ∆Hf + ∆Hx
C. ∆Hx = ∆Hf + ∆Hlatt.
D. ∆Hlatt. =∆Hx – ∆Hf
Answer: A
