1. The problem statement, all variables and given/known data Aluminum phosphide is hydrolysed by water to generate the highly toxic gas phosphine. NH3 is a polar molecule with a dipole moment of 1.47D while PH3 has a dipole moment of 0.58D. Predict whether PH3 is acidic neutral or basic. 2. Relevant equations 3. The attempt at a solution If NH3 has a higher dipole moment than PH3 and is basic does it mean PH3 is acidic? How does polarity affect the acidity of a molecule?