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2011 WAEC Chemistry Practical (a) A colourless gas P was given off when dilute tetraoxosulphate (VI) acid was added...

Chemistry
WAEC 2011

(a) A colourless gas P was given off when dilute tetraoxosulphate (VI) acid was added to zinc salt Q. On bubbling the gas through lime water, a white precipitate R was formed. Identify P, Q and R.

(b) Name a suitable apparatus that could be used to perform each of the following activities in the laboratory

(i) storage of dilute silver trioxonitrate (V):

(ii) heating copper metal;

(iii) separation of a mixture of water and Kerosene. Give one reason for each of your answers in (b)

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Explanation

(a) = CO\(_2\) or Carbon IV oxide gas 

Q = ZnCO\(_3\) or Zinc trioxocarbonate IV gas 

R = CaCO\(_3\) or calcium trioxocarbonate IV gas 

 

(b)(i) Dark brown/amber coloured bottle 

(ii) Bunsen burner 

(iii) Separating funnel 


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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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