Buffer Solutions — Chemistry Grade 11 · High School — Question Bank

Question 1 of 20Easy

A buffer solution is a solution that ...

Question 2 of 20Easy

An acidic buffer can be made from a mixture of ...

Question 3 of 20Easy

An example of a buffer solution is a mixture of ...

Question 4 of 20Easy

The main function of buffer solutions in the human body is ...

Question 5 of 20Easy

A buffer is weakly basic when it consists of ...

Question 6 of 20Easy

The pair forming the buffer system in blood is ...

Question 7 of 20Medium

The pH formula for an acidic buffer is ...

Question 8 of 20Medium

If the weak acid concentration equals its conjugate base concentration, the buffer pH equals ...

Question 9 of 20Medium

The following mixture that forms a buffer solution is ...

Question 10 of 20Medium

$CH X_{3} COOH$ and $CH X_{3} COONa$ have a mole ratio of 1 : 1. If $K_{a} = 1 0^{- 5}$ , the pH is ...

Question 11 of 20Medium

Adding a little $HCl$ to a buffer solution causes the pH to ...

Question 12 of 20Medium

The buffer capacity of a buffer solution is determined by ...

Question 13 of 20Medium

A buffer has pH = 6 and $K_{a} = 1 0^{- 5}$ . The ratio [conjugate base] : [acid] is ...

Question 14 of 20Medium

The following mixture that is NOT a buffer solution is ...

Question 15 of 20Hard

A solution contains 0.1 mol $CH X_{3} COOH$ and 0.1 mol $CH X_{3} COONa$ in 1 L. If $p K_{a} = 4.74$ , the pH is ...

Question 16 of 20Hard

To 1 L of a buffer of 0.1 M $CH X_{3} COOH$ and 0.1 M $CH X_{3} COONa$ ( $p K_{a} = 4.74$ ) is added 0.01 mol $HCl$ . The pH becomes ...

Question 17 of 20Hard

To 1 L of a buffer of 0.1 M $CH X_{3} COOH$ and 0.1 M $CH X_{3} COONa$ ( $p K_{a} = 4.74$ ) is added 0.01 mol $NaOH$ . The pH becomes ...

Question 18 of 20Hard

For a $CH X_{3} COOH$ / $CH X_{3} COO X^{-}$ buffer to have pH equal to $p K_{a} + 1$ , the ratio [ $CH X_{3} COO X^{-}$ ] : [ $CH X_{3} COOH$ ] must be ...

Question 19 of 20Hard

100 mL of 0.2 M $CH X_{3} COOH$ is mixed with 100 mL of 0.1 M $NaOH$ . If $K_{a} = 1 0^{- 5}$ , the resulting pH is ...

Question 20 of 20Hard

A mixture of 0.1 mol $NH X_{3}$ and 0.1 mol $NH X_{4} Cl$ in 1 L with $K_{b} = 1 0^{- 5}$ has pH ...