Please answer the following questions regarding the titration curve shown below.

Question

Please answer the following questions regarding the titration curve shown below. The analyte

is the chemical IN the Erlenmeyer flask and the titrant is in the buret.

Choose which of the following is true about the analyte and the titrant for this titration.

__strong acid analyte with a strong base titrant

__weak base analyte with a weak acid titrant

__strong base analyte with a weak acid titrant

__weak acid analyte with a weak base titrant

__strong acid analyte with a weak base titrant

__weak acid analyte with a strong base titrant

__strong base analyte with a strong acid titrant

__weak base analyte with a strong acid titrant

Explanation / Answer

the answer is weak acid (like Acetic acid) analyte with a strong base (NaOH) titrant.

The start of the graph shows a relatively rapid rise in pH but this slows down as a buffer solution containing ethanoic acid and sodium ethanoate is produced. Beyond the equivalence point (when the sodium hydroxide is in excess) the curve is just the same as that end of the HCl - NaOH graph.

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