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Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 KJ mol⁻1 and -145.6 KJ⁻1mol⁻1,respectively.The standard Gibb's energy change for the same reaction at 298 K is
  • a)
    -221.1 KJ mol⁻1
  • b)
    -339.3 KJ mol⁻1
  • c)
    -439.3 KJ mol⁻1
  • d)
    -523.2 KJ mol⁻1
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Standard enthalpy and standard entropy changes for the oxidation of am...
To determine the standard Gibbs energy change for the oxidation of ammonia at 298 K, we can use the equation:

ΔG = ΔH - TΔS

where ΔG is the standard Gibbs energy change, ΔH is the standard enthalpy change, ΔS is the standard entropy change, and T is the temperature in Kelvin.

Given:
ΔH = -382.64 kJ/mol
ΔS = -145.6 J/mol·K
T = 298 K

Substituting these values into the equation, we get:

ΔG = -382.64 kJ/mol - (298 K)(-145.6 J/mol·K)

Converting -145.6 J/mol·K to kJ/mol·K:

ΔG = -382.64 kJ/mol - (298 K)(-0.1456 kJ/mol·K)

Calculating the product of 298 K and -0.1456 kJ/mol·K:

ΔG = -382.64 kJ/mol + 43.36 kJ/mol

Finally, adding the two values together, we find:

ΔG = -339.28 kJ/mol

Therefore, the standard Gibbs energy change for the oxidation of ammonia at 298 K is -339.3 kJ/mol.

The correct answer is option B.
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Standard enthalpy and standard entropy changes for the oxidation of am...
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Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 KJ mol⁻1and -145.6 KJ⁻1mol⁻1,respectively.The standard Gibb's energy change for the same reaction at 298 K isa)-221.1 KJ mol⁻1b)-339.3 KJ mol⁻1c)-439.3 KJ mol⁻1d)-523.2 KJ mol⁻1Correct answer is option 'B'. Can you explain this answer?
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Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 KJ mol⁻1and -145.6 KJ⁻1mol⁻1,respectively.The standard Gibb's energy change for the same reaction at 298 K isa)-221.1 KJ mol⁻1b)-339.3 KJ mol⁻1c)-439.3 KJ mol⁻1d)-523.2 KJ mol⁻1Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 KJ mol⁻1and -145.6 KJ⁻1mol⁻1,respectively.The standard Gibb's energy change for the same reaction at 298 K isa)-221.1 KJ mol⁻1b)-339.3 KJ mol⁻1c)-439.3 KJ mol⁻1d)-523.2 KJ mol⁻1Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 KJ mol⁻1and -145.6 KJ⁻1mol⁻1,respectively.The standard Gibb's energy change for the same reaction at 298 K isa)-221.1 KJ mol⁻1b)-339.3 KJ mol⁻1c)-439.3 KJ mol⁻1d)-523.2 KJ mol⁻1Correct answer is option 'B'. Can you explain this answer?.
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