Q. 1 Kg of water is pumped to a height of 1 m, the enthalpy is changed by 5 J/Kg, and work done by the motor is 25 J/Kg, assuming system is insulated what is the change in internal energy of water?

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Q. 1 Kg of water is pumped to a height of 10 m, the enthalpy is changed by 50 J/Kg, and work done by the motor is 300 J/Kg, assuming system is insulated what is the change in internal energy of water?

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Q. 2 Kg of water (CP = 0.15 J/Kg°C) is pumped to a height of 0.1 m, work done by the motor is 10 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 27°C?

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Q. 1 Kg of water (CP = 0.5 J/Kg°C) is pumped to a height of 0.5 m, work done by the motor is 40 J/Kg, and heat liberated by it is 10 J/Kg, what is the final temperature of water if the initial temperature was 10°C?

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Q. 1 Kg of water (CP = 0.5 J/Kg°C) is pumped to a height of 1 m, work done by the motor is 20 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 20°C?

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Q. 1 Kg of water (CP = 0.4 J/Kg°C) is pumped to a height of 2 m, work done by the motor is 50 J/Kg, and heat liberated by it is 10 J/Kg, what is the final temperature of water if the initial temperature was 25°C?

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Q. 5 Kg of water (CP = 1 J/Kg°C) is pumped to a height of 0.5 m, work done by the motor is 50 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 0°C?

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Q. For exothermic reactions, what is the heat of reaction?

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Q. For endothermic reactions, what is the heat of reaction?

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Q. Enthalpy of reactants is 15 J/Kg and enthalpy of products is 40 J/Kg, what is the heat of reaction?

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Q. Enthalpy of reactants is 50 J/Kg and enthalpy of products is 25 J/Kg, what is the heat of reaction?

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Q. Enthalpy of reactants is 30 J/Kg and enthalpy of products is 10 J/Kg, what is the heat of reaction?

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Q. Heat of formations of A, B, C, and D, are 5 J, 10 J, 15 J, and 20 J respectively, what is the heat of reaction A + 4B -> 3C + D?

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Q. Heat of formations of A, B, C, and D, are 5 J, 8 J, 2 J, and 15 J respectively, what is the heat of reaction 3A + B -> 3C + 2D?

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Q. Heat of formations of A, B, C, and D, are 1 J, 2 J, 3 J, and 4 J respectively, what is the heat of reaction 3A + 4B -> 2C + D?

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Q. Heat of formations of A, B, C, and D, are 2 J, 5 J, 3 J, and 10 J respectively, what is the heat of reaction 4A + 5B -> 2C + 2D?

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Q. Heat of formations of A, B, C, and D, are 3 J, 5 J, 4 J, and 8 J respectively, what is the heat of reaction 2A + 2B -> 2C + D?

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Q. In the reaction C + O₂ -> CO₂, if the heat liberated is 10 J, what is the heat of formation of CO₂?

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Q. In the reaction 2H₂ + O₂ -> 2H₂O, if the heat liberated is 50 J, what is the heat of formation of H₂O?

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Q. In the reaction 2N -> N₂, if the heat liberated is 6 J, what is the heat of formation of N₂?

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