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18. (EX7-9B) From the data in Practice Example 17 and the following equation, determing
the standard enthalpy of combustion of one mole of 2-propanol, CH3CH(O)CH3(1).
Sử dụng các kết quả tính toán của bài tập 17 kết hợp với dữ liệu dưới đây để xác định
nhiệt đốt cháy chuẩn của một mole 2-propanol CH3CH(OH)CH (1)
CH2CH=CH2(g) + H2O(l) → CH3CH(OH)CH3(1) AH° = -52,3 kJ
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b i think it’s a water wheel turning in a stream

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

answerambulatory;