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DochEvi [55]
3 years ago
10

What is the hydronium h3o+ concentration of a solution with a pH pf 3

Chemistry
1 answer:
arlik [135]3 years ago
7 0

Answer:

1x10^-3M

Explanation:

Data obtained from the question include:

pH = 3

[H3O+] =?

The concentration of the hydronium ion [H3O+] can be obtained by using the formula pH = - Log [H3O+] as illustrated below:

pH = - Log [H3O+]

3 = - Log [H3O+]

Divide through by - 1

- 3 = Log [H3O+]

Take the anti-log of - 3

[H3O+] = 1x10^-3M

Therefore, the concentration of the hydronium ion [H3O+] is 1x10^-3M

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2 years ago
For the following reaction, calculate how many moles of NO2 forms when 0.356 moles of the reactant completely reacts.
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Answer:

0.712 mol of NO₂ are formed .

Explanation:

For the reaction , given in the question ,

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From the above balanced reaction ,

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Applying unitary method ,

1 mol of N₂O₅  reacts to give 4 / 2 mol of NO₂

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<u>now, using the above equation , to calculate the moles of the NO₂ , as follow -</u>

Since ,

1 mol of N₂O₅  reacts to give 4 / 2 mol of NO₂

0.356 mol of N₂O₅  reacts to give 4 / 2 * 0.356 mol of NO₂

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0.712 mol of NO₂ are formed .

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