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# What Is The Oxidation Number Of Cr In Cr2O72-, What Is The Oxidation State Of Cr In Cr2O7^

## What is the oxidation number of Cr in Cr2O72 −?

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion. We assign -2 as the oxidation number for each oxygen, and x as the oxidation number of each chromium and write the following equation: 2x + 7(-2) = – 2… x = +6.

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## What is the oxidation number of cr2 o7 2?

The dichromate ion has a charge of 2−, as indicated by its formula, Cr2O72−. The oxidation number of chromium in the dichromate ion is +6.

## What is cr2o7?

Description. Dichromate(2-) is a divalent inorganic anion obtained by removal of both protons from dichromic acid. It is a chromium oxoanion and a divalent inorganic anion. It is a conjugate base of a hydrogen dichromate.

## Why k2cr2o7 is orange in acidic and yellow in basic?

It’s colour changes from orange to yellow due to formation of chromate (cro4-2) while in basic med. It again changes from yellow to orange. Aakash EduTech Pvt. Ltd.

## What is the N factor of k2 cr2 o7?

Potassium dichromate in an acidic medium is a strong oxidizer. It means it gains electrons during redox reaction. There is overall gain of 6 electrons. That means n-factor for this reaction is 6.

49 g/mol

## What is the equivalent weight of feso4?

So, the molecular weight of ferrous sulphate is 151.8. -Equivalent weight of ferrous sulphate = molecular weight of ferrous sulphate/ involved electron. So, equivalent weight of ferrous sulphate which is present as reductant is 151.8 which is equal to the molecular weight of ferrous sulphate.

## What is the equivalent weight of Fecl3?

In Fecl2, Fe has +2 valency whereas in Fecl3,Fe has +3 valency. Iron (atomic weight 55.845) has an equivalent weight of 27.9225 in ferrous compounds (valence 2) and 18.615 in ferric compounds (valence 3).

## What is equivalent weight of oxygen?

Hydrogen has atomic weight 1.008 (rounded to three decimal places) and always assumes valence 1 in compounds, so its equivalent weight is 1.008. Oxygen has an atomic weight of 15.999 and always assumes valence 2 in compounds, so its equivalent weight is 7.9995.

## What is the N factor of FeSO4?

n factor is defined for compounds involved in redox reactions as Numberif moles of electrons lost or gained by one mole of the given substance. In the above reaction, Fe+2 is changing to Fe+3. So only one electron is involved. n factor of FeSO4 = 1.

## What is the N factor of kmno4?

The n-factor is known as the change per molecule in the oxidation state of an atom in a substance. Was this answer helpful?…Thank you.

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## What is the N factor of AgNO3?

AgNO3 – Mol. mass = 108 + 14 + 48 = 170g/mole !!! Equivalent weight = molar wt. / n- factor !!! and n factor for AgNO3 is 1 !!!

## What is n factor?

For acids, n-factor is defined as the number of H+ ions replaced by 1 mole of acid in a reaction. For bases, n-factor is defined as the number of OH– ions replaced by 1 mole of base in a reaction. Note that n-factor is not equal to its acidity i.e. the number of moles of replaceable OH– ions present in 1 mole of base.

170

## What is n factor of o2?

n factor of oxygen molecule is 2.

## Can n factor be zero?

n factor for acids is its basicity,ie, no of replaceable hydrogen ion per molecule. For a base number of OH- ions that a molecule of base could give is n-factor. Therefore, n-factor is zero.

## What is the N factor of H 3 PO 2?

Answer: N factor of is 3. N factor of is 2.

## What is the N factor of H 3 PO 3?

But for now know it as a thumb rule. Therefore, since H3PO3 has only two H attached to O, its n-factor is 2 and not 3.

## What is the Valency of H 3 PO 4?

Phosphoric acid, or H3​PO4​ , has a total of 32 valence electrons, 5 from the phosphorus atom, 6 from each of the four oxygen atoms, and 3 from each of the hydrogen atom.