Recent questions in Chemical thermodynamics

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During which of the following processes, does entropy decrease ? (A) Freezing of water to ice at \( 0^{\circ} C \) (1) \( (A),(B),(C) \) and (D) only (B) Freezing of water to ice at \( -10^{\circ} C \) (2) (B) and (C) only (C) \( N _{2}( g )+3 H _{2}( g ) \rightarrow 2 NH _{3}( g ) \) (3) (A) and (E) only (D) Adsorption of \( CO ( g ) \) and lead surface (4) \( (A),(C) \) and (E) only (E) Dissolution of \( NaCl \) in water

asked Mar 23, 2022 in Chemical thermodynamics by Sanghamitra Maithani (65 points)

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asked Mar 23, 2022 in Chemical thermodynamics by himanshu8084 (40 points)

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A Gold the temperature of 2.00 g of gold is raised by 11.7 °C when 3.00 J of energy is supplied.

asked Mar 10, 2022 in Chemical thermodynamics by Mamta Ahluwalia (15 points)

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calculate bond energy of c-h bond if enthalpy of combustion of methane, carbon(s), hydrogen (g) is -891, -394, -286 kj/mol respectively. enthalpy of sublimation of c(s) is 717 kj/mol and enthalpy of dissociation of hydrogen gas is 436 kj/mol.

asked Feb 28, 2022 in Chemical thermodynamics by d2267 (20 points)

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The ratio of rate of diffusion of \( C O \) and an unknown gas \( A \) under identical conditions is \( 2: 1 \).

asked Feb 24, 2022 in Chemical thermodynamics by dhruv8349 (35 points)

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transfer. 4.57 An evaporator has \( R -410 A \) at \( -20^{\circ} C \) and quality \( 20 \% \) flowing in, with the exit flow being saturated vapor at \( -20^{\circ} C \). Knowing that there is no work, find the specific heat transfer.

asked Feb 20, 2022 in Chemical thermodynamics by prakhar1317 (15 points)

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If ∆ng = 0 then ∆S is? a) positive b) negative c) 0.And WHY?

asked Feb 19, 2022 in Chemical thermodynamics by sarthak0471 (340 points)

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Under what condition will the reaction occur if a) Both ΔH and ΔS are positive b) Both ΔH and ΔS are negative

asked Feb 10, 2022 in Chemical thermodynamics by Dixit52 (30 points)

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How this equation is derived ?

asked Jan 21, 2022 in Chemical thermodynamics by arpit4230 (25 points)

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Calculate the heat of formation of KCl from the following data : (i) KOH (aq) + HCl (aq) KCl (aq) + H2 O  , H = – 57.3 kJ mol–1 (ii) H2 (g) + 2 2     1 O g H O , 2   H = 1 286.2kJ mol  (iii) 2 2       1 1 H g Cl g aq HCl aq , 2 2    H = – 164.4 kJ mol–1 (iv) K (s) 2 2     1 1 O g H g aq 2 2     KOH (aq), H = – 487.4 kJ mol–1 (v) KCl (s) + aq  KCl (aq), H = + 18.4 kJ mol–1

asked Dec 29, 2021 in Chemical thermodynamics by sushminthiran2687 (15 points)

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The entropy of a sample of a certain substance increases by \( 0.836 J K ^{-1} \) on adding reversibly \( 0.3344 J \) of heat at constant temperature. The temperature of the sample is:

asked Dec 25, 2021 in Chemical thermodynamics by shashank7030 (15 points)

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Chemistry [Class XI]

asked Feb 13, 2021 in Chemical thermodynamics by Enchanted_Devil (15 points)

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Work is extensive, right?

asked Jun 6, 2020 in Chemical thermodynamics by thewhitewolf (35 points)

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First law of thermodynamics

asked Feb 22, 2020 in Chemical thermodynamics by Denovus (35 points)

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A question from chemical thermodynamics

asked Nov 29, 2019 in Chemical thermodynamics by Anu Priya (75 points)

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I am not even getting the idea of this

asked Nov 28, 2019 in Chemical thermodynamics by Anu Priya (75 points)

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One mole of an ideal gas at 300 K in thermal contact with surroundings expands isothermally from 1.0 L to 2.0 L

asked Nov 18, 2019 in Chemical thermodynamics by Saijal (64.8k points)

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For the process H2O(l) → H2O(g) at T = 100°C and 1 atmosphere, the correct choice is

asked Nov 18, 2019 in Chemical thermodynamics by Saijal (64.8k points)

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An ideal gas in a thermally insulated vessel at internal pressure = P1 , volume = V1 and absolute temperature = T1

asked Nov 18, 2019 in Chemical thermodynamics by Saijal (64.8k points)

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The standard enthalpies of formation of CO2 (g), H2 O(l) and glucose(s) at 25°C are –400 kJ/mol, –300 kJ/mol

asked Nov 17, 2019 in Chemical thermodynamics by Saijal (64.8k points)

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Recent questions in Chemical thermodynamics

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