Excess iron was allowed to rust in 2dm³ of most air and the volume of air remaining was measured at 1 atmospheric pressure each day.

      

Excess iron was allowed to rust in 2dm³ of most air and the volume of air remaining was measured at 1 atmospheric pressure each day.The results were as follows.


(i) Write an equation for the formation of rust.
(ii) On which day was the reaction complete. Explain.
(iii) What is the percentage volume of oxygen in air. Show your working.

  

Answers

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(i) 4Fe_(S) + 3O_2(g) + nH₂O_(l)----->2Fe₂O_3(S)


(ii) 6th day - volume of air remains constant.


(iii)

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maurice.mutuku answered the question on September 13, 2019 at 09:03

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