Question
Why is graphite used for making dry cell electrodes but diamond is not?
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$\text{CaO}\ +\ \text{H}_2\text{O}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{Ca(OH)}_2$
$\text{Na}\ +\text{O}_2\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{Na}_2\text{O}$