For the acids, use the formula pH = -log{H+}. (Because HCI has 1 H+ ions per formula unit, {H+} equals the molarity.) For water, use what you know about the pH of neutral solutions. For the bases, examine and extend the pattern.

b. is the answer hoped i        

i'm wiling to try and you : )

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.