One day, Siya’s science teacher was demonstrating an experiment to her students in the lab where she took some sulphur powder and placed it inside a closed chamber. Through the inlet pipe, she allowed some oxygen gas into the chamber. The oxygen gas dissolved with the sulphur and formed another gas
.i)Write the word equation for the above reaction.
ii)What type of oxide is formed as the product?
iii)State the colour of sulphur
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Hydrilla is a green aquatic plant that carries out photosynthesis using carbon dioxide, water and sunlight to produce organic compounds and oxygen. Sodium bicarbonate is dissociated into sodium and bicarbonate ions, bicarbonate ions (HCO
3
-) react with water to produce carbonic acid and OH
−
. The carbonic acid (H
2
CO
3
) is readily decomposed into water and carbon dioxide. Since carbon dioxide is one of the initial substances for photosynthesis, increased availability of this gas increases the rate of photosynthesis as well as the release of oxygen provided all other factors are favourable.
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