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    Multiple choice questions about buffering solutions

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    Which of the following solutions is not a buffer?

    a. 125mL of 0.200M HCl added to 200mL of 0.400M CH3CO2-

    b. 200mL of 0.400M HCl added to 125mL of 0.200M CH3CO2-

    c. 200mL of 0.500M NaOH added to 200mL of 1.000M HF

    d. 100mL of 0.500M H2PO4- added to 100mL of 0.100M HPO42-

    e. 100mL of 0.200M HF added to 300mL of 0.200M NaF

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    https://brainmass.com/chemistry/acids-and-bases/6730

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