Can somebody please explain what monoprotic and diprotic acids are? Please explain simply. Also, what are some examples of each, and is hydrochloric acid monoprotic or diprotic?
2007-01-07 01:06:45 · 4 answers · asked by mbchelsea 1 in Science & Mathematics ➔ Chemistry
Monoprotic acid:
An acid, such as Hydrochloric acid(HCl) or Hydrogen cyanide(HCN), that can lose only one H + ion or proton.
examples: HCl, HBr, HF, HI, HCN etc
Diprotic acid:
An acid, such as sulfuric acid (H2SO4), carbonic acid (H2CO3), that can lose two H + ions or 2 protons.
examples: H2SO4, H2CO3,etc
__________ __________ ____________ ______________
Actually a proton can never exist alone...too unstable.
This is a very old defination you see!
hydrochloric acid IS MONOPROTIC.
Although it doesnot self dissociate as Jerry has written!
HCl + H2O ===> H3O+ + Cl-
You will observe that the proton exists as a hydronium ion or H3O+ instead of just H+
2007-01-07 01:10:04 · answer #1 · answered by Som™ 6 · 1⤊ 0⤋
Monoprotic has 1 H , H+ being a proton
HCl, HBr, HI, HF,HNO3,CH3COOH
Diprotic has 2 H's
H2SO4, H2CO3
Triprotic has 3 H's
H3PO4
2007-01-07 02:25:37 · answer #2 · answered by science teacher 7 · 1⤊ 0⤋
2.) [H+] = 2.50 x 10^-4 pH = -Log[H+] Log [H+] = -3.6; so pH = 3.6 1.) A monoprotic acid is an acid with one hydrogen to donate. Examples are acetic, CH3COOH; Diprotic acids are those with two hydrogen ions to donate. Examples are malic acid (the acid of apples), succinic.
2016-05-23 02:45:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
"Protic" refers to "proton", which is the same as a bare hydrogen nucleus...a naked, positively charged proton.
So protic acids are those where the acidity is associated with the dissociation of the acid into free protons [H+] in solution.
HCl <=> H+ + Cl- has one proton (H+) per acid molecule, so monoprotic.
H2SO4 <=> 2H+ + SO4 -2 has two protons, so is diprotic.
2007-01-07 01:15:44 · answer #4 · answered by Jerry P 6 · 1⤊ 1⤋