Explain volume remains constant when the base is added

Reference no: EM13249821

Strong base is dissolved in 755 mL of 0.400 M weak acid (Ka = 4.54 × 10-5) to make a buffer with a pH of 4.05. Assume that the volume remains constant when the base is added. my pKa is 4.34, mol HA is 0.302, my concentration ratio is 0.51, but how do I get moles of strong base initially added

Reference no: EM13249821

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