What is the N factor for K2Cr2O7?
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What is the N factor for K2Cr2O7?
6
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.
Is K2Cr2O7 an oxidizing agent in basic medium?
Potassium dichromate is a good oxidizing agent, in the acidic medium the oxidation state of chromium changes by +3.
Why K2Cr2O7 show different Colour in acidic and basic medium?
Answer: This is because in basic medium, potassium dichromate forms chromate ions which is yellow in colour while in acidic medium forms dichromate ions. Dichro. ate ions are red in colour while chromateions are yellow in colour.
What will be the equivalent weight of K2Cr2O7 in acidic medium molecular weight of K2Cr2O7 is M?
Hence, the equivalent weight of ${K_2}C{r_2}{O_7}$ in acidic medium will be 49g/eq. Note: It should be remembered to you that potassium dichromate has a wide range of uses, including as an oxidizer in many chemical and industrial applications and in dying, staining and tanning of leather.
How do you find the N factor of K2Cr2O7 in the basic medium?
Answer
- Net ionic equation follows:
- Oxidation state of Chromium in reactant side:
- Oxidation state of Chromium at product side:
- Therefore, the n-factor for this atom will be (6 – 3) = 3.
What happens to K2Cr2O7 in acidic medium?
In acidic medium, K2Cr2O7 exists as Cr2O7^2 – (orange) while in basic medium it is converted to CrO4^2 – (yellow).
What is n factor of KMnO4 in neutral medium?
In neutral medium KMnO4 forms MnO2 (+7 to +4) i.e. it gains 3 electrons. So, n-factor= 3.
What is molecular weight of K2Cr2O7?
294.185 g/mol
Potassium dichromate/Molar mass
What is the N factor of cu2s?
Cu2+ does not change only S2- changes to SO2 hence n=6.