Complete the redox equation: CrBr3 + H2O2 +… → Na2CrO4 + NaBr + H2O

| August 7, 2021 | education

Complete the redox equation: CrBr3 + H2O2 +… → Na2CrO4 + NaBr + H2O Place the coefficients using the ion-electronic balance method.

The reaction takes place between hydrogen peroxide, chromium bromide and sodium hydroxide. As a result of the reaction, water, sodium bromide and sodium chromate are formed. The chemical equation for the reaction is as follows:

3 H2O2 + 2 CrBr3 + 10 NaOH = 2 Na2CrO4 + 6 NaBr + 8 H2O

We make the equation of the redox reaction. Thanks to him, we arrange the coefficients.

Cr3+ – 3ê → Cr6+             /1
2 O 1-  +1ê → 2 O 2-        /3

Set 3 in front of hydrogen peroxide, set 2 in front of chromium bromide, set 10 in front of sodium hydroxide. Similarly, in the reaction products, set 2 in front of sodium chromate, set 6 in front of sodium bromide, and set 8 in front of water. The reaction is equalized.



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