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Verizon [17]
3 years ago
9

20 ml of a 1.0 m hcl solution are added to 3.0 l of acid solution with a ph of 5.35. the ph of the mixture rises to 5.33 was the

initial 3.0 l solution a buffered solution?
Chemistry
1 answer:
SashulF [63]3 years ago
3 0

You may suppose you have a 0.1 M solution of NH3, from:

NH4Cl + NaOH > NH3 + H2O.

Then you can compute the pH from the concentration of NH3 and its pKb.

The concentration is high enough to use the simplified formula:

[OH] = sqr(Kb*conc)

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Explanation:

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One of the differences between a voltaic cell and an electrolytic cell is that in an electrolytic cell __________.
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2 years ago
Nitrogen effuses through a pinhole 1.7 times as fast as another gaseous element under the same conditions. Estimate the other el
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80.92, Krypton

Explanation:

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• It is a process where gas escapes through a pinhole (a very small hole) into a region of low pressure or vacuum

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• states that at a given constant temperature and pressure, the rate of effusion of gases is inversely proportional to the square root of their molar masses

\boxed{ \frac{Rate_1}{Rate_2} =  \sqrt{ \frac{M_2}{M_1} } }

<u>Calculations</u>

Nitrogen exist as N₂ at room temperature, thus its molar mass is 2(14)= 28.

Let the rate and molar mass of unknown gas be Rate₂ and M₂ respectively.

Since N₂ effuses 1.7 times as fast as the unknown gas,

Rate₁= 1.7(Rate₂)

\frac{Rate_1}{Rate_2} = 1.7

1. 7 =  \sqrt{ \frac{M_2}{28} }

Square both sides:

2.89  = \frac{M_2}{28}

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