Biochemistry - Water, pH and Macromolecules - Discussion

Discussion :: Water, pH and Macromolecules - Section 1 (Q.No.7)


Salt dissolves well in water as water molecules

[A]. form hydrogen bonds with the positively and negatively charged ions
[B]. make nonpolar covalent bonds with the positively charged ions only
[C]. surround the ions because of their charge but do not form hydrogen bonds
[D]. share electrons with the ions to make polar covalent bonds

Answer: Option C


No answer description available for this question.

Jeba said: (Jun 20, 2012)  
Water dissolves many substances by surrounding charged particles and "pulling" them into solution. For example, common table salt, sodium chloride, is an ionic substance that contains alternating sodium and chlorine ions. When table salt is added to water, the partial charges on the water molecule are attracted to the Na+ and Cl- ions. The water molecules work their way into the crystal structure and between the individual ions, surrounding them and slowly dissolving the salt. The water molecules will actually line up differently depending on which ions are being pulled into solution. The negative oxygen ends of water molecules will surround the positive sodium ions; the positive hydrogen ends will surround the negative chlorine ions.

Vince said: (Sep 13, 2015)  
The H+ of water molecule forms a bond with Cl- as the salt is dissolving in water, is that not hydrogen bond?

Pawan said: (Aug 5, 2018)  
Hydrogen bonds are likely to happen only between H and O and in rare case N, so the bond between H and Cl- is not Hydrogen bond.

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