Aprocess stream contains 4 w salt and the rest water. this is prepared by passing a part of pure water stream through a saturator containing the salt. the solution leaving the saturator containing 20% wt, salt is mixed with the pure water bypassed to get to the process stream, what fraction of the pure water available is to be bypassed through the saturator?

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.