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Chemical changes case 139 acid-base-boundary. A student sorts acid, alkali and base statements. Which option keeps the terms distinct? Focus on strong acid completely ionised aqueous solution in Strong and weak acids (HT only), not on a neighbouring Unit 4.4 reaction idea.
- A.Chemical changes case 139 acid-base-boundary: Keeps the acid-base distinction tied to the named substance for strong acid completely ionised aqueous solution
- B.Chemical changes case 139 acid-base-boundary: Treats every base as an alkali without checking solubility (Strong and weak acids (HT only))
- C.Chemical changes case 139 acid-base-boundary: Uses pH wording but does not identify the acid-base role (strong acid completely ionised aqueous solution)
- D.Chemical changes case 139 acid-base-boundary: Names a salt product without explaining the reaction context (Reactions of acids)
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