IGCSE Revision Notes Identification of ions and gases

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Syllabus Objectives

CORE:

Describe tests to identify the anions:
(a) carbonate, CO₃ ^2–, by reaction with dilute acid and then testing for carbon dioxide gas
(b) chloride, Cl ^– , bromide, Br ^– , and iodide, I ^–, by acidifying with dilute nitric acid then adding aqueous silver nitrate
(c) nitrate, NO₃ ^– , reduction with aluminium foil and aqueous sodium hydroxide and then testing for ammonia gas
(d) sulfate, SO₄ ^2–, by acidifying with dilute nitric acid and then adding aqueous barium nitrate
(e) sulfite, SO₃ ^2–, by reaction with acidified aqueous potassium manganate(VII)
Describe tests using aqueous sodium hydroxide and aqueous ammonia to identify the aqueous cations:
(a) aluminium, Al ³⁺
(b) ammonium, NH^{4 +}
(c) calcium, Ca²⁺
(d) chromium(III), Cr³⁺
(e) copper(II), Cu²⁺
(f) iron(II), Fe²⁺
(g) iron(III), Fe³⁺
(h) zinc, Zn²⁺
Describe tests to identify the gases:
(a) ammonia, NH₃, using damp red litmus paper
(b) carbon dioxide, CO₂, using limewater
(c) chlorine, Cl ₂, using damp litmus paper
(d) hydrogen, H₂, using a lighted splint
(e) oxygen, O₂, using a glowing splint
(f) sulfur dioxide, SO₂, using acidified aqueous potassium manganate(VII)
Describe the use of a flame test to identify the cations:
(a) lithium, Li⁺
(b) sodium, Na⁺
(c) potassium, K⁺
(d) calcium, Ca²⁺
(e) barium, Ba²⁺
(f) copper(II), Cu²⁺

Revision Notes

IGCSE Revision Notes Identification of ions and gases

The following video preview covers the IGCSE Chemistry Notes on the complete lesson Number 12:Experimental techniques and chemical analysis.

So you need not view: 12.1/12.2/12.3/12.4/12.5 as separate videos.

The above video is a preview of the actual revision notes available as a part of the paid membership. All learning resources in the form of pdfs that are available on the website are 100% printable and downloadable