I need help with 10, 11, 12. I am not sure how to proceed on any of them. I woul

Question

I need help with 10, 11, 12. I am not sure how to proceed on any of them. I would appreciate a step by step answer. Thank you.

10. C12 342) common table sugar. The enthalpy change at 25 °C and 1.00 a for the complete combustion of one mole of sucrose in oxygen to give dioxide gas and water vapour is -5641 kJ. How many kilogrammes of sucrose will produce 500,000 kJ of energy? 11 A 200.0 mL volume of pure hydrogen chloride gas (HC) at a temperature of 25.00 oC and pressure of 700.0 mm Hg was completely dissolved in 50.00 mL of distilled water When the HCI was titrated with a NaOH solution, it took 16.77 mL of of NaOH to reach the endpoint during the titration. Determine the mola M, of the NaOH solution. rity, 12. A 500.0 mL volume of pure ammonia gas (NH3) at a temperature of 26.00 °C and pressure of 800.0 mm Hg was completely dissolved in 50.00 mL of distilled water. When the NH3 was titrated with a H2So4 solution, it took 25.55 mL of of reach the endpoint during the titration. Determine the molarity, M, of the H2SO4 solution. When ammonia is dissolved in water (NH3 HoH NH40H) it becomes ammonium hydroxide, NH40H.

Explanation / Answer

Change in enthalpy for 1 mole of sugar combussion is -5641 KJ. that means I mole of sugar produce 5641 KJ energy upon combussion.

so, 500000 KJ energy will produced from 500000/5641 mole of sugar = 86.6367 moles of sugar = 86.6367*342 gm of sugar = 30313.77 gm of sugar = 3.03 kg of sugar.

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