You Need to Prepare a Buffer Solution with a PH

question 99

Multiple Choice

You need to prepare a buffer solution with a pH of 4.00, using NaF and HF. What ratio of the ratio of [base]/[acid] should be used in making the buffer? For HF, K_a = 7.2 × 10^{- 4}.

• A) [base]/[acid] = 0.14
• B) [base]/[acid] = 0.42
• C) [base]/[acid] = 2.36
• D) [base]/[acid] = 7.20
• E) None of the above ratios is correct.

Understand the economic roles and opportunities available to women in the 19th century, especially within specific cultural contexts.

Examine social class structures in historical contexts and their effects on family life.

Understand the purpose and function of the accounts receivable subsidiary ledger and its role in accounting.

Identify and explain the relationship between the controlling account and the subsidiary ledger.

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