Neco Gce 2020/2021 Chemistry Practical Answer Now Available

(3ai)
(i)To prevent sunlight Ray’s from affecting the solutions

(ii)To prevent the sucking back of water into the hot flask.

(iii) Because it is a component of glass

(iv)NaOH + CO² —> NaHCO³

(3bi)
(i)Heat iodine crystal
(ii)NH⁴Cl

(3bii)
(i)Stationary phase
(ii)Morning phase

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