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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-AC-AB-0011 markL1 FoundationCalculatorConjugate pairs
A Brønsted–Lowry base is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0041 markL1 FoundationCalculatorpH of strong acids
Calculate the pH of 0.01000.0100 mol dm⁻³ HCl.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0121 markL1 FoundationCalculatorStrength
Which is a strong acid?
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0021 markL2 StandardCalculatorConjugate pairs
The conjugate base of H2O\mathrm{H_2O} is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0031 markL2 StandardCalculatorConjugate pairs
In NH3+H2O⇌NH4++OH−\mathrm{NH_3+H_2O\rightleftharpoons NH_4^++OH^-}, water acts as
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0052 marksL2 StandardCalculatorpH of strong acids
Calculate the pH of 0.05000.0500 mol dm⁻³ HNO3\mathrm{HNO_3}.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0062 marksL2 StandardCalculatorpH of strong acids
A strong acid solution has pH 2.70. Calculate [H+][\mathrm{H^+}] in mol dm⁻³.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0071 markL2 StandardCalculatorStrength
Ethanoic acid is a weak acid because it
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0081 markL2 StandardCalculatorConjugate pairs
The conjugate acid of NH3\mathrm{NH_3} is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0101 markL2 StandardCalculatorConjugate pairs
A substance that can act as both an acid and a base is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0092 marksL3 ExamCalculatorpH of strong acids
10.0 cm310.0\ \text{cm}^3 of 0.1000.100 mol dm⁻³ HCl is diluted to 1.00 dm31.00\ \text{dm}^3. Calculate the new pH.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AB-0111 markL3 ExamCalculatorConjugate pairs
In HCO3−+H2O⇌CO32−+H3O+\mathrm{HCO_3^-+H_2O\rightleftharpoons CO_3^{2-}+H_3O^+}, the conjugate pairs are
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Salam Academy Original Practice · Proposed mark scheme