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Elina [12.6K]
3 years ago
14

Coke is an impure form of carbon that is often used in the in-dustrial production of metals from their oxides. if a sample of co

ke is 95% carbon by mass, determine the mass of coke needed to react completely with 1.0 ton of copper(ii) oxide.2cuo1s21c1s2h2cu1s21co21g2
Chemistry
1 answer:
olasank [31]3 years ago
5 0
The reaction equation is:
<span>2CuO(s) + C(s) </span>→ <span>2Cu(s) + CO</span>₂<span>(g)

First, we determine the number of grams present in one ton of copper oxide. This is:
1 ton = 9.09 x 10</span>⁵ g

We convert this into moles by dividing by the molecular mass of copper oxide, which is:
9.09 x 10⁵ / 79.5 = 11,434 moles

Each mole of carbon reduces two moles of copper oxide, so the moles of carbon required are:
11,434 / 2 = 5,717 moles of Carbon required

The mass of carbon is then:
5,717 x 12 = 68,604 grams

The mass of coke is:
68,604 / 0.95 = 72,214 g

The mass of coke required is 7.22 x 10⁴ grams
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Answer:

½O 2 + 2e - + H 2O → 2OH.

Explanation:

Redox reactions - Higher

In terms of electrons:

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reduction is gain of electrons

Rusting is a complex process. The example below show why both water and oxygen are needed for rusting to occur. They are interesting examples of oxidation, reduction and the use of half equations:

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oxygen gains electrons in the presence of water and is reduced: ½O2 + 2e- + H2O → 2OH-

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3 years ago
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bogdanovich [222]

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</span>
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