化学问题,找高手

来源：百度知道 编辑：UC知道 时间：2024/09/22 04:10:01
In a constant pressure calorimeter, 133.8 mL of a 1.00 M metal chloride solution (MCl2(aq)) were added to 133.8 mL of a 0.500 M potassium sulfate solution. The total heat capacity of the calorimeter (including all its contents) was 1.75 kJ oC-1. The temperature in the calorimeter rose from 24.50oC to 29.67 oC. Calculate the enthalpy change (in kJ/mol) for the precipitation reaction: M2+(aq) + SO42-(aq) --> MSO4(s).

M2+(aq) + SO42-(aq) --> MSO4(s).
1mol 1mol
0.0669 0.0669mol
金属氯化物只反应了一半。
温度上升了5.17摄氏度
比热是1.75KJ/摄氏度
放出的热为两者相乘9.0475KJ
除以参与反应的物质的量0.0669得：135.24KJ/mol