Define the term salt. If the pH of a solution is 8, what is the concentration of hydrogen? Tell whether 0.1 M solutions of the following salts would be acidic, neutral, or basic: a... Define the term salt. If the pH of a solution is 8, what is the concentration of hydrogen? Tell whether 0.1 M solutions of the following salts would be acidic, neutral, or basic: a) BaCl2; b) CuSO4; c) (NH4)2SO4; d) NaCN.
Understand the Problem
The questions are focused on fundamental concepts in chemistry, specifically regarding salts, pH, and acid-base behavior of solutions.
Answer
Salt: Compound from acid-base reaction. [H+] with pH 8: 1x10^-8 M. BaCl2: neutral, CuSO4: acidic, (NH4)2SO4: acidic, NaCN: basic.
The term 'salt' refers to a chemical compound made from the neutralization reaction of an acid and a base. For a solution with pH 8, the hydrogen ion concentration is 1x10^-8 M. The solutions are classified as follows: a) BaCl2 - neutral, b) CuSO4 - acidic, c) (NH4)2SO4 - acidic, d) NaCN - basic.
Answer for screen readers
The term 'salt' refers to a chemical compound made from the neutralization reaction of an acid and a base. For a solution with pH 8, the hydrogen ion concentration is 1x10^-8 M. The solutions are classified as follows: a) BaCl2 - neutral, b) CuSO4 - acidic, c) (NH4)2SO4 - acidic, d) NaCN - basic.
More Information
Salts can be acidic, basic, or neutral depending on the strengths of the acids and bases that form them. BaCl2 is neutral because it comes from a strong acid (HCl) and a strong base (Ba(OH)2).
Tips
A common mistake is forgetting to assess the relative strengths of the acid and base that form the salt. Remember that a strong base and weak acid produce a basic salt.
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