Final answer:
The pH scale measures the acidity or basicity of a substance. The pH value of a salt formed by a weak acid and strong base is slightly basic, while the pH value of a salt formed by a strong acid and strong base is neutral.
Step-by-step explanation:
The pH scale is a logarithmic scale that measures the acidity or basicity of a substance. It ranges from 0 to 14, with 0 being extremely acidic, 14 being extremely basic, and 7 being neutral. The pH value of a salt formed by a weak acid and a strong base will be greater than 7, making it slightly basic. On the other hand, the pH value of a salt formed by a strong acid and a strong base will be neutral, around 7.
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