The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm3 to a volume of 100 dm3 at 27°C is
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The Gibbs energy for the decomposition of Al2O3 at 500°C is as follows: $\dfrac{2}{3}$Al2O3 → $\dfrac{4}{3}$Al + O2, ΔrG = +966 kJ mol–1 The potential difference needed for electrolytic reduction of Al2O3 at 500°C is at least |
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For the reversible reaction, A(s) + B(g) ⇌ C(g) + D(g), ΔG° = –350kJ which one of the following statements is true? |
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If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride gas, then |
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The bond energy (in kcal mol–1) of a C—C single bond is approximately |
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The values of ΔH and ΔS of a certain reaction are –400 kJ mol–1 and –20 kJ mol–1K–1 respectively. The temperature below which the reaction is spontaneous is |
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The work done when two mole of an ideal gas is compressed from a volume of 5 m3 to 1 dm3 at 300 K, under a pressure of 100 kPa is |
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An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If Ti is the initial temperature and Tf is the final temperature, which of the following statements is correct? |
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The standard enthalpy of formation (ΔfH°) at 298 K for methane, CH4(g), is –74.8 kJ mol–1. The additional information required to determine the average energy for C–H bond formation would be |
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Based on the first law of thermodynamics, which one of the following is correct? |
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Entropy of the universe is |
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