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Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:
- a)–2221.1 KJmol–1
- b)–339.3 KJmol–1
- c)–439.3 KJmol–1
- d)–523.2 KJmol–1
Correct answer is option 'B'. Can you explain this answer?
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Standard enthalpy and standard entropy changes for the oxidation of NH...
Calculating Standard Gibbs Energy Change for the Oxidation of NH3
Given Information:
Standard Enthalpy Change (ΔH°) = 382.64 kJ mol⁻¹
Standard Entropy Change (ΔS°) = 145.6 J K⁻¹mol⁻¹
Temperature (T) = 298 K
Formula:
ΔG° = ΔH° - TΔS°
Calculation:
ΔG° = 382.64 kJ mol⁻¹ - (298 K x (145.6 J K⁻¹mol⁻¹/1000 J kJ⁻¹)) = 339.3 kJ mol⁻¹
Therefore, option (b) is the correct answer.
Explanation:
The standard Gibbs energy change (ΔG°) is the difference between the standard enthalpy change (ΔH°) and the product of the temperature (T) and the standard entropy change (ΔS°). In this case, the given values of ΔH° and ΔS° are used to calculate ΔG° at a temperature of 298 K. The units of ΔH° and ΔS° are kJ mol⁻¹ and J K⁻¹mol⁻¹, respectively, so the units of ΔG° are also kJ mol⁻¹.
Given Information:
Standard Enthalpy Change (ΔH°) = 382.64 kJ mol⁻¹
Standard Entropy Change (ΔS°) = 145.6 J K⁻¹mol⁻¹
Temperature (T) = 298 K
Formula:
ΔG° = ΔH° - TΔS°
Calculation:
ΔG° = 382.64 kJ mol⁻¹ - (298 K x (145.6 J K⁻¹mol⁻¹/1000 J kJ⁻¹)) = 339.3 kJ mol⁻¹
Therefore, option (b) is the correct answer.
Explanation:
The standard Gibbs energy change (ΔG°) is the difference between the standard enthalpy change (ΔH°) and the product of the temperature (T) and the standard entropy change (ΔS°). In this case, the given values of ΔH° and ΔS° are used to calculate ΔG° at a temperature of 298 K. The units of ΔH° and ΔS° are kJ mol⁻¹ and J K⁻¹mol⁻¹, respectively, so the units of ΔG° are also kJ mol⁻¹.
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Community Answer
Standard enthalpy and standard entropy changes for the oxidation of NH...
Take temp. as 25
apply dG=dH- TdS
apply dG=dH- TdS
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Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer?
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Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer?.
Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer?.
Solutions for Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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Here you can find the meaning of Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
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ample number of questions to practice Standard enthalpy and standard entropy changes for the oxidation of NH3 at 298 K are –382.64 KJ mol–1 and – 145.6 JK–1mol–1, respectively. Standard Gibb’s energy change for the same reaction at 298 K is:a)–2221.1 KJmol–1b)–339.3 KJmol–1c)–439.3 KJmol–1d)–523.2 KJmol–1Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Chemistry tests.
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