Which one of the following is the correct observation for the reaction between sodium carbonate and dilute sulphuric acid? a. Bubbles of a colourless gas
b. Colourless gas
c. No observable change
d. Bubbles of a greenish yellow gas

Okay this will take 1 hour okay dont forget me.

Ibelieve y y even though i've only taken chemistry for one year

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