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 Form 4 Acids, Bases and Salts Topical Questions and Answers

(a) Naturally occurring magnesium consists of three isotopes. 78.6% #\ ^24Mg#;10% #\ ^25Mg# and #\ ^26Mg#.Calculate to one decimal place, the relative atomic mass of magnesium.
(b) Wen magnesium burns in air, it forms a white solid and grey- green solid. When a few drops of water re added to the mixture, a gas that
turns red litmus paper blue is evolved. Identify the:
(i) White solid
(ii) Gas evolved and use of the gas.
(I) Name of gas
(II) Use of the gas.

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