CIE AS Chemistry (9701) exams from 2022

Revision Notes

2.2.1 Reactions of Group 2 Elements

Reactions of Group 2 Elements

  • The Group 2 elements react with oxygen, water and dilute acids

Group 2 reactions table

Group 2 - Table 1_Reactions of Group 2 Elements, downloadable AS & A Level Chemistry revision notes

Group 2 reactions with oxygen & water chemical equations

Group 2 - Table 2_Reactions of Group 2 Elements, downloadable AS & A Level Chemistry revision notes

Group 2 reactions with dilute hydrochloric acid & dilute sulfuric acid chemical equations

Group 2 - Table 3_Reactions of Group 2 Elements, downloadable AS & A Level Chemistry revision notes

  • The reaction of all metals with oxygen follows the following general equation:

2M(s) + O2(g) → 2MO(s)

Where M is any metal in Group 2

Remember than Sr and Ba also form MO2

  • The reaction of all metals with water follows the following general equation:

M(s) + 2H2O(l) → M(OH)2(s) + H2(g)

Except for, Be which does not react with water

  • The reaction of all metals with dilute HCl follows the following general equation:

M(s) + 2HCl(aq) → MCl2(aq) + H2(g)

  • The reaction of all metals with dilute H2SO4 follows the following general equation:

M(s) + H2SO4(aq) → MSO4(aq) + H2(g)

Remember that SrSO4 and BaSO4 are insoluble

Exam Tip

Learn the general equation for the reaction with oxygen, water and dilute HCl/H2SO4 and the exceptions instead of memorizing the entire table!

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