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melisa1 [442]
3 years ago
6

Show that the pH of a solution is -0.301 when its hydronium ion concentration equals 2 moles/L. Is the solution acidic or basic?

Chemistry
1 answer:
vaieri [72.5K]3 years ago
8 0

Answer:

The answer to your question is below

Explanation:

Data

Demonstrate pH = -0.301

concentration = 2 moles/L

Formula

pH = -log [H⁺]

Process

1.- Calculate the [H⁺] concentration

[H⁺] = 2 moles/L = 2 M2.- Substitute in the formula

pH = -log[2]

simplification

pH = -0.301

2.- Conclusion

It is an acidic solution

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There's also a shorter way to do this: Notice the molar ratio from Cu to Ag, which is 1:2. When you plug in 31.75 into your molar mass for Cu, it equals 1/2 mol. That also means that you have 1 mol Ag because of the ratio, qhich you can then plug into your molar mass, getting 107.9 as well.
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