2Cr + 2OH⁻ + 6H₂0 ---> 2Cr(OH)₄⁻ + 3H₂Cr(0) - 3e ---->Cr(+III) I*22H(+I) + 2e ---->H2(0) I*3
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2Cr + 2OH⁻ + 6H₂0 ---> 2Cr(OH)₄⁻ + 3H₂
Cr(0) - 3e ---->Cr(+III) I*2
2H(+I) + 2e ---->H2(0) I*3