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mario62 [17]
3 years ago
6

Can an acid-base indicator give you an exact value for the pH of a substance?

Chemistry
1 answer:
OlgaM077 [116]3 years ago
7 0
Yes and no it depends on what u r useing
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Which one of the following is most likely to be an ionic compound? SO2
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14. A cinder cone is the simplest type of volcano.<br> a. True<br> b. False
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True

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Decribe how hydrogen and oxygen form water
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Well, its a very simple process actually. Here is how it works;

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8 0
2 years ago
A solution prepared by dissolving 0.100 mole of propionic acid in enough water to make 1.00 L of solution is observed to have a
torisob [31]

Answer:

C) k_a=1.3\times 10^{-5}

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

The expression of the pH of the calculation of weak acid is:-

pH=-log(\sqrt{k_a\times C})

Where, C is the concentration = 0.5 M

Given, pH = 2.94

Moles = 0.100 moles

Volume = 1.00 L

So, Molarity=\frac{Moles}{Volume}=\frac{0.100}{1.00}\ M=0.100\ M

C = 0.100 M

2.94=-log(\sqrt{k_a\times 0.100})

\log _{10}\left(\sqrt{k_a0.1}\right)=-2.94

\sqrt{0.1}\sqrt{k_a}=\frac{1}{10^{2.94}}

k_a=1.3\times 10^{-5}

4 0
2 years ago
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