The answer is D) IIA buffer system must contain a weak acid and i.pdf
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The document discusses buffer systems, stating that a valid buffer must consist of a weak acid and its conjugate base, or a weak base and its conjugate acid. It provides examples of various pairs, indicating which qualify as buffers and which do not. The correct answer identified in the document is the pair involving NH3 and NH4+ as a buffer system.
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The answer is D) IIA buffer system must contain a weak acid and i.pdf
- 1. The answer is: D) II A buffer system must contain a weak acid and its conjgate base, or a weak base and its conjugate acid. I. is NOT a buffer as Ca(OH)2 and CaCl2 are not a conjugate acid/base pair II IS a buffer as NH3 and NH4+ are a conjugate acid/base pair III. is not a buffer as HClO and HBr are not a conjugate acid/base pair IV. is not a buffer as BaI2 and NaI are not a conjugate acid/base pair V. is not a buffer as HCl and NaCl are not a conjugate acid/base pair Solution The answer is: D) II A buffer system must contain a weak acid and its conjgate base, or a weak base and its conjugate acid. I. is NOT a buffer as Ca(OH)2 and CaCl2 are not a conjugate acid/base pair II IS a buffer as NH3 and NH4+ are a conjugate acid/base pair III. is not a buffer as HClO and HBr are not a conjugate acid/base pair IV. is not a buffer as BaI2 and NaI are not a conjugate acid/base pair V. is not a buffer as HCl and NaCl are not a conjugate acid/base pair