WAEC 2025 CHEMISTRY ANSWERS (ALT. PRACTICAL)

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(1)

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(2)

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(3a)
Ammonia gas (NH₃)

(3b)
Pass the gas over moist red litmus paper; it turns blue.

(3c)
(NH₄)₂SO₄

(3d)
Ammonium tetraoxosulphate(VI)

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