The P 4 O 10 produced is dissolved in water that contains bromothylmol blue indicator already made blue by 0.1M NH 3 . The solution turns from colorless to pink. As the CO 2 is given off, the indicator changes from blue to green and then to yellow, 3. The solution turns from blue to green to yellow. Metal oxides that dissolve in water react with water to form basic solutions.
Nonmetal oxides react with water to from acidic solutions.