A-For each statement below, indicate whether it is True or False. 1. Breaking th

Question

A-For each statement below, indicate whether it is True or False.
1. Breaking the hydrogen bond between 2 water molecules is called dissociation.
2. When water dissociates, an oxygen atom separates from the rest of the molecule.
3. The hydroxide ion has an overall charge of negative one.
4. A hydrogen ion is the same as a proton.
5. When a hydrogen ion separates from a water molecule, it usually combines with another water molecule to form a hydronium ion.
6. A hydronium ion has the formula H2O+.
7. In pure water, at 25OC, about 10% of the water molecules are dissociated at any given time.
8. In pure water, the concentration of hydrogen ions always equals the concentration of hydroxide ions.
9. In pure water, the concentration of hydrogen ions is 1 x 107 molar.
10. Water dissociates into oppositely charged ions.

B- Fats are excellent energy storage molecules because

they have a relatively high ratio of energy storing C—H bonds. they have a relatively high ratio of energy storing C=O bonds. they are hydrophobic and do not easily mix with water. they have a relatively high concentration of oxygen atoms, which are very electronegative. they are more difficult to hydrolyze than most other molecules.

Explanation / Answer

A 1. False....dissociation is when 1 molecule breaks apart. 2. False....it dissociates into a hydroxide ion and a proton. 3. True 4. True....as long as it is the cation (positive)...there is also a hydride ion that is negatively charged. 5. True 6. False...it is H3O+ 7. If that is meant to be 25 degress, then false...about 1 in every 54 million dissociate. 8.True 9. False...it is 1x10^-7 10. True

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.