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- Nov 23, 2009
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All of the following properties are higher for a 1.0M HCl(aq) solution than for a 1.0M HF(aq) solution except:
A. boiling point
B. freezing point
C. electrical conductivity
D. osmotic pressure
My reasoning: HF can hydrogen bond and therefore has a higher BP than HCl. The rest have to do with colligative properties and since HCl fully dissociates they are true statements. However, the answer is B and I don't know why (and there's no explanation!). What's wrong with my reasoning?
Which of the following would yield the greatest hydroxide concentration when added to water?
A. Mg2+
B. H+
C. Cl-
D. NH2-
It says the answer is D but I don't know why. I had originally thought Mg2+ because it binds to OH- and therefore would promote the autoionization of water due to Le Chatliers principle (taking away a product in the reaction H2O --> H + OH). What's wrong with my reasoning?
I am grateful to any clarification on these topics. Thank you in advance!
-happy
A. boiling point
B. freezing point
C. electrical conductivity
D. osmotic pressure
My reasoning: HF can hydrogen bond and therefore has a higher BP than HCl. The rest have to do with colligative properties and since HCl fully dissociates they are true statements. However, the answer is B and I don't know why (and there's no explanation!). What's wrong with my reasoning?
Which of the following would yield the greatest hydroxide concentration when added to water?
A. Mg2+
B. H+
C. Cl-
D. NH2-
It says the answer is D but I don't know why. I had originally thought Mg2+ because it binds to OH- and therefore would promote the autoionization of water due to Le Chatliers principle (taking away a product in the reaction H2O --> H + OH). What's wrong with my reasoning?
I am grateful to any clarification on these topics. Thank you in advance!
-happy