OCR GCE AS LEVEL CHEMISTRY B PAPER 2 QUESTION PAPER 2023 (H033/02: Chemistry in depth)

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OCR GCE AS LEVEL CHEMISTRY B PAPER 2 QUESTION PAPER 2023 (H033/02: Chemistry in depth). DOWNLOAD OFFICIAL AND VERIFIED OCR AS LEVEL CHEMISTRY B PAPER 2 QUESTION...

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OCR GCE AS LEVEL CHEMISTRY B PAPER 2 QUESTION PAPER 2023 (H033/02: Chemistry in depth). DOWNLOAD OFFICIAL AND VERIFIED OCR AS LEVEL CHEMISTRY B PAPER 2 QUESTION PAPER 2023 ON www.leakedexams.com.

Â This question is about Group 2 compounds.
Group 2 hydroxides can be used to neutralise acidity in a variety of contexts. Magnesium
hydroxide may be used to neutralise excess stomach acidity and calcium hydroxide may be used
to neutralise acidity in soils.
The hydroxides are formed when the oxides react with water.
(a) Write an equation to show the ions formed when calcium oxide reacts with water.
[1]
(b) A student shakes a small amount of magnesium oxide in a test tube with water. A white
suspension is formed.
Â The student then adds dilute hydrochloric acid, drop by drop with shaking, until no further
changes are seen.
Â Describe how the appearance of the contents of the test tube changes during the addition of
the acid.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
.............................................................................................................................................. [2]
(c) Barium chloride solution is used to test for the presence of sulfate ions in solution.
Â Write an ionic equation for this test.
Â Include state symbols.
[2]

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Author	OCR KING
Published	30 Jul 2024
Included files	PDF
H033 H033/02 OCR GCE AS LEVEL CHEMISTRY B PAPER 2 QUESTION PAPER 2023 OCR AS LEVEL CHEMISTRY B PAPER 2 OCR CHEMISTRY B PAPER 2 2023 CHEMISTRY B PAPER 2 OCR OCR CHEMISTRY B 2023 OCR CHEMISTRY B 2023 CHEMISTRY B CHEMISTRY