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0.65 of zinc was reacted with 20cm³ of 2 M copper(II) sulphate solution in a plastic beaker. The copper(II) sulphate solution was in excess. The initial...

0.65 of zinc was reacted with 20cm³ of 2 M copper(II) sulphate solution in a plastic beaker.
The copper(II) sulphate solution was in excess. The initial temperature and the highest temperature of the solution were recorded. 0.64 of copper metal was formed.
a) Other than change in temperature, state the observations made during the reaction
b) Calculate the
I Number of moles of Zinc that reacted (Zn=65)
II The number of moles of copper that was displaced from the solution (Cu=64)
III The mole ratio of Zn: Cu

Answers

(a) The blue colour of solution fades /changes from blue to colourless Brown solid
deposited.
(b) i) No. of moles that reacted Zn = 65

(ii) The no. of moles that was displaced from the solution (Cu =64)

(iii) The mole ratio of Zn: Cu
0.01: 0.01 =1:1

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sharon kalunda answered the question on May 16, 2019 at 13:48

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