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Determine stoichiometric reacting masses, identify limiting reactants, and calculate volumes of gases at r.t.p., as well as the volumes and concentrations of solutions expressed in g/dm³ and mol/dm³, including conversions between cm³ and dm³.

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Determine stoichiometric reacting masses, identify limiting reactants, and calculate volumes of gases at r.t.p., as well as the volumes and concentrations of solutions expressed in g/dm³ and mol/dm³, including conversions between cm³ and dm³

This point belongs to The mole and the Avogadro constant, especially The mole and the Avogadro constant outcomes.
You need to be able to determine stoichiometric reacting masses, identify limiting reactants, and calculate volumes of gases at r.t.p., as well as the volumes and concentrations of solutions expressed in g/dm³ and mol/dm³, including conversions between cm³ and dm³.
The key ideas to know are Calculate.
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Calculate

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This objective helps connect The mole and the Avogadro constant outcomes to exam-style questions, flashcards, and revision notes for The mole and the Avogadro constant.

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Paper 4 structured question: The mole and the Avogadro constant

Paper 4Theory (Extended)1 marks

Description

Reaction of A and B

In a reaction, 2 moles of A react with 3 moles of B to produce 4 moles of C. If you start with 5 moles of A and 7 moles of B, determine the limiting reactant and the amount of product formed.

a
State the limiting reactant in this reaction.
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Identify that concentration can be expressed in grams per cubic decimeter (g/dm³) or moles per cubic decimeter (mol/dm³).
The mole and the Avogadro constant outcomes
Recognize that the mole (mol) is the unit for measuring the amount of substance, and that one mole contains approximately 6.02 x 10²³ particles, known as the Avogadro constant, which can refer to atoms, ions, or molecules.
The mole and the Avogadro constant outcomes
Apply the equation mass (g) = amount of substance (mol) × molar mass (g/mol) to determine: (a) amount of substance, (b) mass, (c) molar mass, (d) relative atomic or molecular/formula mass, and (e) number of particles, using the Avogadro constant.
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Utilize the molar gas volume of 24 dm³ at room temperature and pressure (r.t.p.) in calculations related to gases.
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The mole and the Avogadro constant outcomes

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