2006-06-16 00:14:27 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Covalent bonds with a bond strength of 50-150 kcal/mol are a lot stronger than ionic bonds (less than 10 kcal/mol)
2006-06-16 00:26:04 · answer #1 · answered by dragolt 3 · 0⤊ 2⤋
the partial positively charge hydrogen atoms and partial negatively charge oxygen atoms of water can attract and dissociate ionic compound due to electrostatic attraction. The dissociated anion and cathion will be then surrounded by water molecules, preventing them to associate again. Covalent compounds are not affected by electrostatic attraction of water, therefore they cannot dissolve in water. In some cases, covalent bond is stronger than ionic bond. For instance, diamond and silicon have very strong covalent bonds.
2006-06-16 03:25:39 · answer #2 · answered by Clark C 2 · 0⤊ 0⤋
Ionic bond is the attraction between oppositely charged ions. Ionic compounds are made up of cations and anions. Water is a polar substance as oxygen is more electronegative than hydrogen. The oxygen end has a partial negative charge while the hydrogen end has a partial positive charge.
When an ionic compound such as sodium chloride is added to water, the oxygen end of water is attracted to sodium ions while the hydrogen end is attracted to chloride ions. Water pull the ions apart from the crystal lattice structure and forms a shield around them. Hence ionic compounds are soluble in water.
2006-06-16 00:22:50 · answer #3 · answered by ghost whisperer 3 · 0⤊ 0⤋
you are able to no longer particularly generalize. some covalent bonds are superior than some ionic bonds, and the different is likewise authentic. additionally, 'bond power' would be diverse in diverse environments - it particularly is, NaCl effectively dissolves in water. This latter case won't be bond power, yet I element it out because of the fact some might leap to the tip that bond power is an absolute inspite of environment.
2016-12-08 21:30:17 · answer #4 · answered by Anonymous · 0⤊ 0⤋
because the hallmark propertie of such stronger bonds, like ionic compounds dissociate in water, meaning something totally different is formed in the reaction.
2006-06-16 00:19:18 · answer #5 · answered by Anonymous · 0⤊ 0⤋
to put it in simple words, the rule is :
Like dissolves like.
therefore ionic compounds are soluble in polar solvents (eg: water) & covalent compounds are soluble in non-polar or covalent solvents (eg: benzene).
why is it so- the reason is already explained by others answering this ques.
2006-06-16 06:50:57 · answer #6 · answered by mm 2 · 0⤊ 0⤋
becoz ionic matter forms the bondage with the solvant and get dissociated quickly...
2006-06-16 00:18:05 · answer #7 · answered by TJ 5 · 0⤊ 0⤋
darn, dragolt beat me to it. its a two part question, but it seems like everyone else has the other part too.
2006-06-16 00:28:57 · answer #8 · answered by always under siege 5 · 0⤊ 0⤋