Saturday, January 5, 2019


2.19     describe the reactions of magnesium, carbon and sulfur with oxygen in air, and the acid/base character of the oxides produced


Equation

Observation

Oxide
Appearance

Acid or
Base?
2Mg(s) + O2(g) → 2MgO(s)
bright white flame
white solid
base

C(s) + O2(g) → CO2(g)
red glow
colourless gas
acid

S(s) + O2(g) → SO2(g)
blue flame
colourless gas
acid

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