WAEC Chemistry 2025 Theory — Question 59
Question 59 of 70 from the West African Examinations Council (WAEC) Chemistry 2025 Theory paper, with the correct answer and a full explanation.
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5(d)(ii). State the function of each of the compounds in 5(d)(i) in the industrial process.
Model answer
Al(OH)3: seeding of crystals. KAl(SO4)2: coagulation of solid particles, helps the dye stick to the cloth. Na3AlF6: dissolves alumina and lowers its melting point for electrolysis.
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