Study the set-up below and answer the questions that follow. After sometimes, the cotton wools X, Y and Z changed color in turn. (a) What were the...

      

Study the set-up below and answer the questions that follow.
fig122832019307.png

After sometimes, the cotton wools X, Y and Z changed color in turn.
(a) What were the colour changes?

(b) Which cotton wool changed colour first?

(c) Explain why the cotton wools did not change colour at the same time.

  

Answers


Kavungya
a) From orange to pink
b) X
c) Hydrogen chloride diffuses slowly through air from the end of the cotton wool soaked in
concentrated hydrochloric acid and meets X, Y and Z at different times.
Kavungya answered the question on March 28, 2019 at 12:09


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