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CAIE A-Level Chemistry AS 7.2.2 Names and Formulas of the Common Alkalis Questions

Practise recalling common alkali names and formulas and recognising their use in reactions using CAIE 9701 AS questions.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Recall the names and formulas of common alkalis used in A-Level Chemistry.

CAIE A-Level Chemistry AS 7.2.2 Names and Formulas of the Common Alkalis Questions question 1

[Maximum number: 1]

NO and NO2\mathrm{NO}_{2} react at 25∘C25^{\circ} \mathrm{C} to give N2O3\mathrm{N}_{2} \mathrm{O}_{3} as shown in the equation.

NO( g)+NO2( g)⇌N2O3( g)ΔH=−7.2 kJ mol−1\mathrm{NO}(\mathrm{~g})+\mathrm{NO}_{2}(\mathrm{~g}) \rightleftharpoons \mathrm{N}_{2} \mathrm{O}_{3}(\mathrm{~g}) \quad \Delta H=-7.2 \mathrm{~kJ} \mathrm{~mol}^{-1}

The reaction is reversible and reaches equilibrium in a closed system.

A student titrates nitric acid with a base to form a solution containing aqueous magnesium nitrate.

Identify a base that the student could use.

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