Which of the following statements is incorrect? A) One reason why HCl is a stron

Question

Which of the following statements is incorrect? A) One reason why HCl is a stronger acid than HF is that Cl has a larger atomic radius than F. B) One reason why HCI is a stronger acid than HF is that the H-Cl bond is weaker than the H-F bond. C) One reason why HCI is a stronger acid than HF is that Cl is more electronegative D) The acids HBr and HI both appear equally strong in water. E) F is a stronger base than Cr. At 25 degree C, what is the pH of a 10.0 M HNO3 solution? A) -1.0 B) 0.0 C) 1.0 D) 10.0 E) 14.0

Explanation / Answer

Q3.

a)

not really directly proportinal

b)

This is TRUE, since H-Cl is weaker and can be broken easier than that of HF

c)

not really, since F is the most electonegative species

d)

False, HBr is relativley stronger than HI

E)

True, since F- can accept H+ ions

Q4.

HNO3 is strong acid

so it will dissociate 100%

so

[H+] = [HNO3] = 10

then

pH = -log(H+) = -log(10) = -1

best answer is -1

and, YES, there can be negatie pH values

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