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shepuryov [24]
3 years ago
15

What is the ph of a.35 m solution of sodium azide? the ka value for hydrazoic acid is 1.9?

Chemistry
1 answer:
bekas [8.4K]3 years ago
8 0

The formula for calculating pH is:

pH = -log [H+]

 

We calculate the value of [H+] using the given Ka value:

Ka = [H+]*[A-] / [HA] 

Assuming that [H+] = [A-], therefore:

1.9 = [H+]^2 / 0.35

[H+] = 0.815

 

pH = -log [H+]

pH = -log 0.815

<span>pH = 0.0886</span>

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4 0
3 years ago
If five moles of a gas at a pressure of 5.4 kpa have a volume of 120 liters, what is the temperature?
ra1l [238]
<h3>The temperature is 15.58 kelvin </h3>

<em><u>Solution:</u></em>

<em><u>Ideal gas equation is given as:</u></em>

PV = nRt

Where,

P = pressure

V = volume

n = amount of substance

R = ideal gas constant

T = temperature

From given,

V = 120 liters

n = 5 moles

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T = ?

Therefore,

5.4 \times 120 = 5 \times 8.314 \times T\\\\648 = 41.57 \times T\\\\T = 15.58\ kelvin

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3 years ago
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where parameters for the first instance are given on the left side and parameters for the second instance are given on the right side of the equation.
substituting these values in the equation
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6 0
3 years ago
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