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Dafna1 [17]
2 years ago
11

Determine oxidation states and answer the following questions about the reaction 2Li 2H2O 2LiOH H2. (1 point)

SAT
1 answer:
Luden [163]2 years ago
4 0

The oxidation state of Lithium changed from 0 to +1

The oxidation state of hydrogen changed from +1 to 0.

<h3>What is the oxidation state of the elements in the reaction?</h3>

The equation of the redox reaction is given as follows:

2 Li + 2 H₂O → 2 LiOH + H₂

The oxidation states of the elements changed as follows:

The oxidation state of Lithium changed from 0 to +1

The oxidation state of hydrogen changed from +1 to 0.

In conclusion, the reaction is a redox reaction.

Learn more about oxidation state at: brainly.com/question/27239694

#SPJ1

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<h3>What is a spreadsheet?</h3>

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2 years ago
If there are 12 x 1023 oxygens in a sample of water, how many grams of hydrogen are in the sample?.
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The amount of grams of hydrogen that are in the water sample is;

3.985 g

<h3>Avogadro's number</h3>

We are given that;

Number of moles of oxygen in a sample of water = 12 × 10²³

  • Now, the chemical formula of a molecule of water is H₂O. This means that for every 1 atom or molecule of oxygen, there must be 2 hydrogen atoms or molecules present.

Since Number of moles of oxygen in the sample is 12 × 10²³, then number of moles of hydrogen will be twice that = 2 × 12 × 10²³ = 24 × 10²³ moles

Now, molar mass of hydrogen is 1 g/mol and we know that;

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Thus;

6.023 × 10²³ moles = 1 g/mol

Thus; 24 × 10²³ moles of hydrogen = ( 24 × 10²³ × 1)/(6.023 × 10²³)

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