1. A buffer solution can be made by mixing equal concentrations of acetic acid and sodium acetate. 2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid and sodium chloride. 3. A buffer solution resists changes in pH when small quantities of acid or base are added. O 1 and 2 only O 2 and 3 only O 1 and 3 only O All of 1, 2, and 3 O None of these responses åpply.

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Which of the following statements are TRUE of buffer solutions?
1. A buffer solution can be made by mixing equal concentrations of acetic acid and
sodium acetate.
2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid
and sodium chloride.
3. A buffer solution resists changes in pH when small quantities of acid or base are
added.
O 1 and 2 only
O 2 and 3 only
O 1 and 3 only
All of 1, 2, and 3
O None of these responses åpply.
Transcribed Image Text:Which of the following statements are TRUE of buffer solutions? 1. A buffer solution can be made by mixing equal concentrations of acetic acid and sodium acetate. 2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid and sodium chloride. 3. A buffer solution resists changes in pH when small quantities of acid or base are added. O 1 and 2 only O 2 and 3 only O 1 and 3 only All of 1, 2, and 3 O None of these responses åpply.
How many grams of the excess reactant remain assuming the reaction goes to
completion and that you start with 15.5 g of sodium sulfide and 12.1 g copper(II) sulfate?
Reaction: sodium sulfide + copper(II) sulfate → you know
0 9.39
O 16
O 9.6
O 5.9
O None of these responses apply.
Transcribed Image Text:How many grams of the excess reactant remain assuming the reaction goes to completion and that you start with 15.5 g of sodium sulfide and 12.1 g copper(II) sulfate? Reaction: sodium sulfide + copper(II) sulfate → you know 0 9.39 O 16 O 9.6 O 5.9 O None of these responses apply.
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