How many mL of 0.210 M NaOH solution are required to completely react with 26.9 mL of 0.526 M HCl solution to produce sodium chloride and water? Use mL as the unit and keep correct number of significant figures.

Because a model would make the investigation easier to understand

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf