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1 year ago

Assume that acid rain has lowered the ph of a particular lake to ph 5.0. what is the hydroxide ion concentration of this lake?

Chemistry

1 answer:

Ray Of Light [21]1 year ago

5 0

That acid rain has lowered the ph of a particular lake to ph 5.0. the hydroxide ion concentration of this lake is

1 × 10^-9 mol of hydroxide ions per liter of lake water

pH + pOH = 14

pOH = 14 - 5

pOH = 9.00

pOH = -log [OH⁻]

[OH⁻] = 10^-pOH

[OH⁻] = $10^{-9}$ mol

Therefore,

the hydroxide ion concentration of this lake is 1 × 10^-9 mol

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Density of hydrogen gas = $d_2=0.0899 g/L$

Mass of the hydrogen gas :

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Mass of the oxygen gas :

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Total density of filled ball with oxygen gas:

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The ball filled with nitrogen will not float in the air because total density of filled ball is greater than the density of an air.

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