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andrezito [222]
3 years ago
15

What is the oxidation of Fe in Fe2O3

Chemistry
1 answer:
Inessa05 [86]3 years ago
4 0

Answer/ explanation :

The oxidation number of Fe

In Fe2O3

To solve this problem,

The oxidation number of O is -2

Oxidation number of Fe is x

Note that there are 2moles of Fe and 3moles of O

2 Fe + (-2 * 3) = 0

2 Fe + (-6) = 0

2 Fe - 6 = 0

2 Fe = 6

Fe = 6/2

Fe = +3

Therefore, the oxidation number of Fe is +3

The sign is very important, either - or +

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Answer:

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Explanation:

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Calculate the percent ionization of nitrous acid in a solution that is 0.249 M in nitrous acid. The acid dissociation constant o
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4.26 %

Explanation:

There is some info missing. I think this is the original question.

<em>Calculate the percent ionization of nitrous acid in a solution that is 0.249 M in nitrous acid. The acid dissociation constant of nitrous acid is  4.50  ×  10 ⁻⁴.</em>

<em />

Step 1: Given data

Initial concentration of the acid (Ca): 0.249 M

Acid dissociation constant (Ka): 4.50  ×  10 ⁻⁴

Step 2: Write the ionization reaction for nitrous acid

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Step 3: Calculate the concentration of nitrite in the equilibrium ([A⁻])

We will use the following expression.

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Step 4: Calculate the percent ionization of nitrous acid

We will use the following expression.

\alpha = \frac{[A^{-} ]}{[HA]} \times 100\% = \frac{0.0106M}{0.249} \times 100\% = 4.26\%

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