The range of acid PH on PH scale is____________?
Correct answer: C. 1 to 6
- A. 9 to 8
- B. 6 to 7
- C. 1 to 6
- D. 1 to 10
Explanation
On the school-level pH scale, acids have pH values below 7, commonly represented as 1 to 6. The range 6 to 7 is a tempting choice because both numbers are near neutrality, but pH 6 is only the upper edge of the acidic range and pH 7 is neutral.
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About Buffer Solutions
Buffer solutions resist changes in pH when small amounts of acid or base are added, using a weak acid and its conjugate base or a weak base and its conjugate acid. Work includes buffer action, the common-ion effect, Henderson-Hasselbalch calculations, buffer capacity, and the difference between acidic and basic buffers.
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