Which of the following is a buffer system? NaCl and NaNO_3 H_2O and HCl HCl and

Question

Which of the following is a buffer system? NaCl and NaNO_3 H_2O and HCl HCl and NaOH H_2CO_3 and HCO_3^- E NaCl and NaOH When a person hyperventilates they breathe very quickly, eagling CO_2 most quickly than it can be produced. This redacts the concentration of CO_2 in the Mood. below an Lech atelier's principle, how is the equilibrium affected by the decreases of CO_2 in the blood? CO_2 + H_2O H_2CO_3 + H_2O HCO_3 + H_3O^+ More HCO_3^- is produced Less H_3O^+ produced. The equilibrium is shifted to the right. More H_3O^+ is produced. The equilibrium is unchanged. What happens to pH when the buffer capacity of a solution is excelled? The pH increases The pH will not be changed The solution will become unstable The pH will ether increase or decrease. depending on whether acid or base is added to the solution The pH decreases.

Explanation / Answer

1.

buffer is a conjugate base + its weak acid

so

A; no it wont work, since no wek acid is present

B: strong aci presence, wont work

c: strong acid/base, wont work

d: this is a good buffer since weak acid + conjugate base are ´resent

e. no conjugate...

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