A) \[Cr{{O}_{3}}+{{H}_{2}}O+{{O}_{2}}\]
B) \[C{{r}_{2}}{{O}_{3}}+{{H}_{2}}O+{{O}_{2}}\]
C) \[Cr{{O}_{5}}+{{H}_{2}}O\]
D) \[{{H}_{2}}C{{r}_{2}}{{O}_{7}}+{{H}_{2}}O+{{O}_{2}}\]
Correct Answer: C
Solution :
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}+{{H}_{2}}S{{O}_{4}}+4{{H}_{2}}{{O}_{2}}\to {{K}_{2}}S{{O}_{4}}+2Cr{{O}_{5}}+5{{H}_{2}}O\]
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