Anion Precipitation Test - Statistics

General Stats

Answer Stats

Hint	Answer	% Correct
Turns blue	OH⁻	86%
Step 1	Test with red litmus	86%
Step 2	Add HNO₃	71%
	Cl⁻	71%
	I⁻	71%
	Br⁻	57%
	CH₃COO⁻	57%
Vinegar smell	CH₃COO⁻	57%
	CO₃²⁻	57%
Effervescence/bubbling	CO₃²⁻	57%
	PO₄³⁻	57%
Step 2: No observation	Add Ba(NO₃)₂	43%
Remains red	SO₄²⁻	43%
Step 3: No precipitate	Add AgNO₃	29%
Ag⁺ + Br⁻ → BrCl(s) what colour is the precipitate?	cream/pale yellow	29%
White precipitate	SO₄²⁻	29%
Ag⁺ + Cl⁻ → AgCl(s) what colour is the precipitate?	white	29%
Ag⁺ + l⁻ → Agl(s) what colour is the precipitate?	yellow	29%
No precipitate	Add NH₃ & Ba(NO₃)₂	14%
2Ba²⁺ + 3PO₄³⁻ → Ba₃(PO₄)₂(s) what colour is the precipitate?	white	14%

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