Q82 / 180 · NEET 2014 · Chemistry

In acidic medium, $H_{2} O_{2}$ changes $C r_{2} O_{7}^{- 2}$ to $C r O_{5}$ which has two $(- O - O -)$ bonds Oxidation state of $C r$ in $C r O_{5}$ is:

A
$+ 5$
B
$+ 3$
Correct answer
C
$+ 6$
D
$- 10$

Solution

Chromium forms six bonds with the oxygen atoms and oxygen is more electronegative than the chromium. Due to this chromium shows oxidation state in ${CrO}_{5}$ is $+ 6$ .

Hence, the correct answer is option: 'C'.

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In acidic medium, H2O2 changes Cr2O7-2 to CrO5 which has two -O-O- bonds Oxidation state of Cr in CrO5 is:

Solution

Relevant Questions

In acidic medium, $H_{2} O_{2}$ changes $C r_{2} O_{7}^{- 2}$ to $C r O_{5}$ which has two $(- O - O -)$ bonds Oxidation state of $C r$ in $C r O_{5}$ is: