International ASChemistryEdexcelExam Questions2. Energetics, Group Chemistry, Halogenoalkanes & AlcoholsGroups 1 & 2

Groups 1 & 2 (Edexcel International AS Chemistry): Exam Questions

Exam code: XCH11

35 mins9 questions

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Groups 1 & 2

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Medium
1
1 mark

Which of these compounds does not produce a colour in a flame test, and produces an alkaline gas when warmed with sodium hydroxide solution?

  • Ca(OH)2

  • Mg(OH)2

  • NH4Cl

  • BeCl2

Choose your answer

2
1 mark

5.00 g of calcium carbonate is heated until it fully decomposes.

CaCO3 (s) → CaO (s) + CO2 (g)

What is the volume of CO2 produced, measured at RTP?

[Mr(CaCO3) = 100.1; Molar volume of a gas at RTP = 24 dm3 mol–1]

  • 1.1 dm3

  • 1.2 dm3

  • 2.4 dm3

  • 120 dm3

Choose your answer

3
1 mark

Which statement about the reactivity of Group 2 elements with water is correct?

  • Reactivity decreases down the group because ionic radius decreases

  • Reactivity decreases down the group because nuclear charge increases

  • Reactivity increases down the group because first ionisation energy decreases

  • Reactivity is constant down the group because all Group 2 elements form 2+ ions

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1
1 mark

What is the ionic equation for the reaction between aqueous solutions of barium nitrate and sodium sulfate?

  • Na+ (aq) + N (aq) → NaNO3 (s)

  • 2Ba+ (aq) + Sstraight O subscript 4 superscript 2 minus end superscript (aq) → Ba2SO4 (s)

  • Na2+ (aq) + 2N (aq) → Na(NO3)2 (s)

  •  Ba2+ (aq) + Sstraight O subscript 4 superscript 2 minus end superscript (aq) → BaSO4 (s)

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2
1 mark

Data for some Group 1 and Group 2 cations are shown in the table.

Cation

Ionic radius / nm

Ionic charge

W

0.100

+2

X

0.138

+1

Y

0.113

+2

Z

0.149

+1

Which cation would be expected to form the nitrate with the greatest thermal stability?

  • W

  • X

  • Y

  • Z

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3
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1 mark

Magnesium nitrate decomposes on heating.

2Mg(NO3)2 → 2MgO + 4NO2 + O2

What is the total volume of gas formed at room temperature and pressure (r.t.p.) when 0.005 mol of magnesium nitrate decomposes completely?

[Molar volume of a gas at r.t.p. = 24 000 cm3 mol−1]

  • 600 cm3

  • 300 cm3

  • 240 cm3

  • 120 cm3

Choose your answer