Archetype Sub-90 Dry-Wipe Invariant (Qualitative Ion Identification, Gravimetric Halide Precipitates & Strict Anion Test Sequence (CO₃²⁻ → SO₄²⁻ → X⁻)): Qualitative Anion Law: ALWAYS test Carbonate (HNO3 -> CO2 effervescence) -> Sulfate (Ba(NO3)2 -> white BaSO4) -> Halide (AgNO3 -> white AgCl / cream AgBr / yellow AgI) using NITRIC acid only.
sub90 ESATARCH-C-13: Qualitative Ion Identification, Gravimetric Halide Precipitates & Strict Anion Test Sequence (CO₃²⁻ → SO₄²⁻ → X⁻)Chemistry
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SUB-90 ZONE (<50S)
0.0s50s Sub-9090s ESAT Budget150s Classroom
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Question 1 of 25 • 90s Target
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Chemistry•ARCH-C-13•Table-Row Matching
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