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In the reaction, C4H(10(l)) + Cr(2)O(7(a...

In the reaction, `C_4H_(10(l)) + Cr_(2)O_(7(aq))^(2-) + H_((aq))^(+) to H_6C_4O_(4(s)) + Cr_((aq))^(3+) + H_2O_((l))` the change in the oxidation number of the chromium atom is

A

a decrease by six units

B

a decrease by three units

C

an increase by three units

D

an increase by five units

Text Solution

Verified by Experts

The correct Answer is:
B
The oxidation state of Cr changes from +6 to +3. Thus, it decreases by three units.
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