why is it that we prefer to use phosphoric acid than sulfuric acid?
2007-01-25 18:26:09 · 3 answers · asked by john m 1 in Science & Mathematics ➔ Chemistry
They are both dehydrating agents, but sulphuric acid normally "chews up" big organic molcules so that you are left with a brown mess as well as your product. Phosphoric acid is much cleaner in this respect.
2007-01-25 18:35:19 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋
it fairly is the means of phosphoric acid to donate protons H+ ions that makes the adaptation. NaOH can't. Mechanism An H+ ion from phosphoric acid attaches to between the lone pairs on the -OH team on cyclohexanol to type the intermediate C6H11-(OH2+). The -OH2+ species is a stable leaving team and detaches as a molecule of H2O leaving the intermediate carbocation C6H11+, this deprotonates to regenerate the H+ ion from the acid and type cyclohexene C6H10. The OH- ions interior the alkali can't assault the -OH team on cyclohexanol in this variety and there is not any reaction between the two
2016-12-12 20:33:40 · answer #2 · answered by ? 4 · 0⤊ 0⤋
I think it is because phosphoric acid has better acid dissolacation than sulfuric acid, and I think but I'm not sure (its been a long long time) but sulfuric acid can undergo addation reactions with alkenes bonds.
2007-01-25 18:38:57 · answer #3 · answered by Mr Hex Vision 7 · 0⤊ 0⤋