MACY asked in 科學及數學化學 · 1 decade ago

CHEM QUESTIONS

The purpose of this experiment is to determine the enthalpy change for the displacement reaction:

Zn(s)+Cu2+(aq) Cu(s)+Zn2+(aq)

2.List possible reasons for any difference between your value and the accepted value

3.Why do you think the temperature increase for a few readings after adding in zinc ?(Hint:it does not increase if a large excess of zinc is used or if the powder is very finely divided.)

1 Answer

Rating
  • 1 decade ago
    Best Answer

    is it a F.6 lab??

    2. heat loss to surrounding by conduction, radiation and one that i have forgotton

    Suggested improvement : use polystyrene cup or vacuum flask instead

    3. i am not sure for this anwser thus i can't anwser it

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