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SPM Chemistry A xplosive Module (Chemistry A Ticket For “U” ) GREEN ZONE [GZ]
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23 A mixture containing two anions was tested and the results are shown below.
Satu campuran mengandungi dua anion telah diuji dan keputusannya ditunjukkan di bawah.

Test Results
Ujian Keputusan
Gas bubbles which turned limewater milky
Dilute nitric acid Gelembung-gelembung gas yang menukarkan
Asid nitrik cair
air kapur menjadi keruh
Dilute nitric acid added, followed
by aqueous silver nitrate White precipitate formed.
Tambah asid nitrik, diikuti oleh Mendakan putih terbentuk
larutan Agentum nitrat

Which anions were present?
Anion-anion apakah yang hadir?

A Carbonate and chloride
Karbonat dan klorida

B Carbonate and iodide
Karbonat dan iodide

C Sulphate and chloride
Sulfat dan klorida

D Sulphate and iodide
Sulfat dan iodide

24 Reaction between solution A and sodium chloride solution will produce lead(II)
chloride precipitate and sodium nitrate solution.
Tindak balas antara larutan A dan larutan natrium klorida akan menghasilkan
mendakan plumbum(II) klorida dan larutan natrium nitrat.

A + 2NaCl PbCl 2 + 2NaNO 3

Which of the following substances is A?
Antara berikut, yang manakah A?

A Lead(II) iodide C Lead(II) carbonate
Plumbum(II) iodide Plumbum(II) karbonat

B Lead(II) nitrate D Lead(II) sulphate
Plumbum(II) nitrat Plumbum(II) sulfat

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