The addition of hydrochloric acid and __________ to water produces a buffer solution. ?

Question

A) HC6H5O

B) NaNO3

C) HNO3

D) NaOH

E) NH3

is it E???

Answer 1

Buffer solution is a mixture of a weak acid or weak base and its salt.

Buffer solutions consist of a weak acid and its conjugate base (more common) or a weak base and its conjugate acid (less common).

HA(aq) + H2O(l) ↔ H3O+(aq) + A−(aq)

So it shoul b E

this is wot i kw..hope this helped

Good luck..

Answer 2

I can say it is E because it will produce NH4Cl(ammonuim chloride) containing solution which is a buffer solution.

Answer 3

typically a buffer solution is made from a weak acid and it's conjugate base. However in this question, the acid is a strong acid. Hence, I can't confidently tell you the answer. For sure A and C is out cause it's an acid. Since both D and E are bases it must mean both is out. So i would guess that the answer is B which is the only salt. Also, since NO3- is the conjugate base of a strong acid (HNO3), it should be the answer.

So, i would say the answer is B.  

Answer 4

I agree with a couple of the other answerers, the answer is E. NH4Cl is mildly acidic. with a pH of around 6.5...