How to find the Oxidation Number for O in H2O2 (Hydrogen peroxide)
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4 سال پیش
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To find the correct oxidation
To find the correct oxidation state of O in H2O2 (Hydrogen peroxide), and each element in the molecule, we use a few rules and some simple math.
First, since the H2O2 molecule doesn’t have an overall charge (like NO3- or H3O+) we could say that the total of the oxidation numbers for H2O2 will be zero since it is a neutral molecule.
We write the oxidation number (O.N.) for elements that we know and use these to figure out oxidation number for O.
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GENERAL RULES
Free elements have an oxidation state of zero (e.g. Na, Fe, H2, O2, S8).
In an ion the all Oxidation numbers must add up to the charge on the ion.
In a neutral compound all Oxidation Numbers must add up to zero.
Group 1 = +1
Group 2 = +2
Hydrogen with Non-Metals = +1
Hydrogen with Metals (or Boron) = -1
Fluorine = -1
Oxygen = -2 (except in H2O2 or with Fluorine)
Group 17(7A) = -1 except with Oxygen and other halogens lower in the group
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We know that Oxygen usually is -2 with a few exceptions. When Oxygen is in a peroxide, like H2O2 (Hydrogen peroxide), it has a charge of -1. When it is bonded to Fluorine (F) it often has an oxidation number of +1.
First, since the H2O2 molecule doesn’t have an overall charge (like NO3- or H3O+) we could say that the total of the oxidation numbers for H2O2 will be zero since it is a neutral molecule.
We write the oxidation number (O.N.) for elements that we know and use these to figure out oxidation number for O.
----------
GENERAL RULES
Free elements have an oxidation state of zero (e.g. Na, Fe, H2, O2, S8).
In an ion the all Oxidation numbers must add up to the charge on the ion.
In a neutral compound all Oxidation Numbers must add up to zero.
Group 1 = +1
Group 2 = +2
Hydrogen with Non-Metals = +1
Hydrogen with Metals (or Boron) = -1
Fluorine = -1
Oxygen = -2 (except in H2O2 or with Fluorine)
Group 17(7A) = -1 except with Oxygen and other halogens lower in the group
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We know that Oxygen usually is -2 with a few exceptions. When Oxygen is in a peroxide, like H2O2 (Hydrogen peroxide), it has a charge of -1. When it is bonded to Fluorine (F) it often has an oxidation number of +1.
4 سال پیش
در تاریخ 1399/02/27 منتشر شده
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