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- Question
For a certain reaction,DGq = -45 kJ/mol and DHq= -90 kJ/mol at 0°C. What is the minimum temperature at which the reaction will become spontaneous, ifDHq and DSq are independent of temperature?
Options- A. 273 K
- B. 298 K
- C. 546 K
- D. 596 K
- Correct Answer
- 546 K
ExplanationT = 273 °K
Using the formula,
DGq = DHq ?TDS
-45 = -90 ?273 DS
DS = 0.164
Now since DHq and DSq are independent,T2= DH/DS = 45/0.164 = 273°K
Required Temp = 273 + 273 = 546°K
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Options- A. Sir Alexander Graham Bell
- B. Benjamin Franklin
- C. Thomas Alva Edison
- D. Alfred B. Nobel Discuss
- 2. Large astronomical telescopes always use as objective
Options- A. lens
- B. mirror
- C. combinations of lenses
- D. None of the above Discuss
- 3. Who suggested that most of the mass of the atom is located in the nucleus?
Options- A. Thompson
- B. Bohr
- C. Rutherford
- D. Einstein Discuss
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More questions
Correct Answer: Alfred B. Nobel
Correct Answer: combinations of lenses
Correct Answer: Rutherford
Correct Answer: the caldera
Correct Answer: Toni Morrison
Correct Answer: Ridhi Desai
Correct Answer: Rice
Correct Answer: Bangok
Correct Answer: Holkar Trophy - Bridge
Explanation:
Nehru Trophy - BOAT RACE
B.C. Roy Trophy - FIFA
Holkar Trophy - Bridge
Ruia Trophy - Bridge
B.C. Roy Trophy - FIFA
Holkar Trophy - Bridge
Ruia Trophy - Bridge
Correct Answer: WAN (Wide Area Network)
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