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Zinaida [17]
3 years ago
5

What is the concentration of OH– ions at a pH = 6?

Physics
1 answer:
makkiz [27]3 years ago
8 0
<h3><u>Answer;</u></h3>

1 × 10^-8 M

<h3><u>Explanation</u>;</h3>

pH is given by the -log[H+] while

pOH is given by the -log[OH-]

But;

pH + pOH = 14

Thus; if pH is 6, then pOH = 8

pOH = 8

-log[OH-] = 8

[OH-] = 10^-8 M

The concentration of OH- ions at a pH of 6 is 1 × 10^-8 M

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Answer:

3120J

Explanation:

Given parameters:

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Unknown:

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To find the energy given to the mass, let us simply use the expression below:

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m is the mass of the substance

c is the specific heat capacity

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Input the variables;

            H    = 5  x   0.8    x    (800 - 20)  = 3120J

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