A) \[{{P}_{2}}{{O}_{5}}/\Delta ,{{H}_{2}}O,{{P}_{4}}/{{I}_{2}},Na\]
B) \[{{P}_{4}}/{{I}_{2}},Na,{{P}_{2}}{{O}_{5}}/\Delta \]
C) \[1.23\text{ }g/cc\]
D) \[485\text{ }g/cc\]
Correct Answer: C
Solution :
\[2Fe{{C}_{2}}{{O}_{4}}+CrO_{7}^{2-}+14{{H}^{+}}\xrightarrow{{}}2F{{e}^{3+}}\] \[+2C{{r}^{3+}}+4C{{O}_{2}}+7{{H}_{2}}O\] \[\because \]
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