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Henry's Law

When CO2 is i...

Question

When $C O_{2}$ is introduced into aerated drinks and sealed, what is the nature of the graph between partial pressure of $C O_{2}$ and its concentration in the drink?

Exponentially increasing

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Positive slope

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Negative slope

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Constant

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Solution

The correct option is B Positive slope
$C O_{2}$ obeys Henry’s law, which governs the solubility of gases in liquids in relation to its pressure. Henry’s law states that mole fraction of gas in the solution varies directly with its partial pressure over the surface i.e. $P = K_{H} \times χ$ (mole fraction).. The graph is of the form y = mx, a positively sloped straight line passing through the origin.

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