A buffer solution contains 0.303 M C6H5NH3Cl and 0.424 M C6H5NH2 (aniline). Determine the pH change when 0.108 mol HClO4 is added to 1.00 L of the buffer. pH after addition − pH before addition = pH change =

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   

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o

Hi + naoh -> h2o + nal