My name is Mithilesh.I'm from INDIA.I'm studying XI standard.While solving my chemistry question paper related to Organic Chemistry,I had faced a question like this
"
THE NUMBER OF HYDROGEN BONDS IN WATER MOLECULE?
a)8 b)4 c)2 d)1
ANS:b(4 bonds)
"
How can we calculate the number of hydrogen bonds for a given molecule?
Plz help in solving this question.I'm struggling for this question since a week.
2006-10-16 02:16:36 · 4 answers · asked by vishnu s 1 in Science & Mathematics ➔ Chemistry
This is simple if you draw a planar diagram of the water module.
The hydrogen bond in water is a physical bond between hydrogen from another molecule to the oxygen.
Oxygen can bond with one hydrogen from a second molecule and a second hydrogen from a third molecule. Draw this!
Partial total: 2 bonds.
In addition the two hydrogens from the the first molecule can each bond with two oxygens in a fourth and fifth molecule.
Partial total: 2 bonds.
In total: 4 bonds.
2006-10-16 02:41:24 · answer #1 · answered by Dr. J. 6 · 0⤊ 0⤋
Hydrogen bonds are a type of attractive intermolecular force that exists between two partial electric charges of opposite polarity. They should not be confused with covalent bonds.
Each of the 2 hydrogens on water can take part in a hydrogen, in addition the two lone pairs on the oxygen can do so also.
So we have a potential 4 H-Bonds.
See here for more details
http://www.chemguide.co.uk/atoms/bonding/hbond.html
2006-10-16 09:29:22 · answer #2 · answered by drcjs_007 3 · 0⤊ 0⤋
the answer is 2 as explained by david... U might also want to take a look at Valency of substances its very important for Chemistry. Clear all your doubts from the teacher ..
11 std student from Maharashtra
2006-10-16 10:17:44 · answer #3 · answered by sudhanshu I 1 · 0⤊ 0⤋
Water, H20, can be represented as
H-------O--------H.
There are two hydrogen bonds linking hydrogen to oxygen in each water molecule.
2006-10-16 09:29:55 · answer #4 · answered by davidosterberg1 6 · 0⤊ 1⤋