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Question
The presence of CO2 in the atmosphere results in:
The presence of CO2 in the atmosphere results in:
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Solution
The correct option is D rusting.
The presence of CO2 in the atmosphere will do iron oxide rusting. When a drop of water hits an iron object, two things begin to happen almost immediately. First, the water, a good electrolyte, combines with carbon dioxide in the air to form a weak carbonic acid, an even better electrolyte. As the acid is formed and the iron dissolved, some of the water will begin to break down into its component pieces - hydrogen and oxygen. The free oxygen and dissolved iron bond into iron oxide, in the process freeing electrons.
The presence of CO2 in the atmosphere will do iron oxide rusting. When a drop of water hits an iron object, two things begin to happen almost immediately.
First, the water, a good electrolyte, combines with carbon dioxide in the air to form a weak carbonic acid, an even better electrolyte. As the acid is formed and the iron dissolved, some of the water will begin to break down into its component pieces - hydrogen and oxygen.
The free oxygen and dissolved iron bond into iron oxide, in the process freeing electrons.
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