Calculate the Amount of Ammonium Chloride (NH₄Cl) That Must Be

question 68

Multiple Choice

Calculate the amount of ammonium chloride (NH₄Cl) that must be added to 1.0 L of 0.10 M NH₃ ( K _b = 1.8×10 ^{- 5}) to prepare a buffer of pH 9.00.

• A) 0.10 mole
• B) 0.056 mole
• C) 0.18 mole
• D) 5.6×10 ^{- 5} mole
• E) buffer cannot be made

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Surplus

The amount by which revenue exceeds expenses in a given period, indicating a positive financial state.

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