How many moles of phosphine (PH3) are produced for every 4.0 moles of hydrogen that react according to the chemical equation below? 3H2 + P2 → 2PH3

2.67 moles of Phosphine are produced

Explanation:

From the equation 3H2 + P2 → 2PH3

3 moles of hydrogen (H2) = 2 moles of Phosphine (PH3)

4 moles of hydrogen = X moles of PH3

Then, cross multiply

X moles of Phosphine = (4 x 2) / 3

= 8 / 3

= 2.67 moles

Thus, 4 moles of hydrogen produces 2.67 moles of Phosphine

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

the answer is c i believe