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rjkz [21]
4 years ago
5

Where does oxidation and reduction take place in the reaction of Br2 + 2I- → 2Br + I2

Chemistry
1 answer:
Shkiper50 [21]4 years ago
5 0
Okay, let's look at the oxidation number of each substance.
-Br2 has an oxidation number of 0 because it is in a stable form.
- I- has a -1 charge and thus has an oxidation number of -1.
- 2Br- has a -1 charge also
- I2 has an oxidation number of 0 as well.

Bromine goes from 0 to -1 and Iodine goes from -1 to 0.
Therefore, Bromine is having an electron added whilst Iodine is having an electron removed.

Oxidation is Loss of electrons so Iodine is being oxidised, Reduction is Gain of electrons so Bromine is being reduced. 
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B is wrong. A pie chart is best for comparing parts of a whole.

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4 years ago
The sum of protons and neutrons in an atom is called the.
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Atomic mass / mass number / atomic weight

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6 0
2 years ago
What is a atom of chemistry
Yuliya22 [10]

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Elements are made up of same atoms.

Atom consist of electron, proton and neutron.

Explanation:

Atom was first discovered by John Dalton.

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In the end of 18th century J.J. Thomson put forward a new concept of atom. he said that atom have negative charged particles called electrons but overall atom is neutral.

In 1909 Rutherford with his students discovered positive charged particles and nucleus and said that it is in the center of atom.

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So overall Structure of an Atom is

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Answer:

1 - e, 2 - k, 3 - a, 4 - i, 5 - b,

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