A-LevelChemistryChemical periodicityMay/June 2014Paper 1 Q131 Mark
X and Y are oxides of different Period 3 elements. If one mole of Y is added to water, the solution formed is neutralised by exactly one mole of X. What could be the identities of X and Y? [Figure 13.1]
AX: Al2O3, Y: P4O10
BX: Al2O3, Y: SO3
CX: Na2O, Y: P4O10
DX: Na2O, Y: SO3
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The correct answer is D. This question tests the candidate's understanding of chemical periodicity within the Chemistrysyllabus. The examiner's mark scheme requires...
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