The equation:
$2C_4H_{10}+13O_2\;\rightarrow \;8CO_2+10H_2O$
The test for water:
Condensation on the surface of the test tube
The test for carbon dioxide:
$Ca^{2+}+2OH^- +CO_2\rightarrow Ca^{2+}CO_3^{2-}+H_2O$
Calcium carbonate is a white solid insoluble in water, it precipitates.
