Which of the following aqueous solutions are good buffer systems? . 0.19 M sodiu

Question

Which of the following aqueous solutions are good buffer systems?
.

0.19 M sodium hydroxide + 0.26 M sodium bromide

0.22 M hydrochloric acid + 0.17 M potassium chloride

0.11 M nitrous acid + 0.16 M potassium nitrite

0.28 M ammonia + 0.35 M potassium hydroxide

0.33 M sodium nitrate + 0.28 M potassium nitrate

Which of the following aqueous solutions are good buffer systems?
.

0.11 M acetic acid + 0.18 M potassium acetate

0.28 M ammonia + 0.38 M ammonium bromide

0.24 M nitric acid + 0.21 M potassium nitrate

0.11 M potassium hydroxide + 0.28 M potassium chloride

0.37 M barium perchlorate + 0.27 M barium chloride

Explanation / Answer

1)

answer : 0.11 M nitrous acid + 0.16 M potassium nitrite

2)

answers :

0.11 M acetic acid + 0.18 M potassium acetate

0.28 M ammonia + 0.38 M ammonium bromide

explanation:

buffer is the mixture of weak acid + its salt of strong base

                (or)

buffer is the mixture of weak base + its salt of strong acid

so the above mentioned acids and bases are suitable for buffer

NaOH , HCl are strong

NaCl , BaCl2 cannot form buffers

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

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