What ratio of sodium oxalate (Na2C2O4) and sodium hydrogen oxalate (NaHC2O4) is required for a buffer with a pH of 4.5? The Ka of the acid is Ka2 of oxalic acid (H2C2O4) = 6.4 x 10–5   ** Need asap pls. Thanks.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.