A student titrates a 25.00 mL sample of 00100 M CH3COOH (aa) with ?0100 M NaOH (

Question

A student titrates a 25.00 mL sample of 00100 M CH3COOH (aa) with ?0100 M NaOH (aq). Which of the following is FALSE? At the equivalence point, one of the species present is a substantial amount of hydroxide ion Even though CH COOH is a weak acid, the reaction of CH COOH (al with NaOH (aq) proceeds nearly 100% because of the presence of the strong base. weak acid. This At the equivalence point, one of the species present is the conjugate base of species is not a spectator ion and results in a pH of greater than 7 at the equivalence point O The point at which the moles of base delivered equals the moles of acid is known as the equivalence point Half of the acid has been neutralized when 12 50 ml of the NaOH (aa) has been delivered

Explanation / Answer

Let's evaluate the every statement

Option A

The reaction

CH3COOH + NaOH = CH3COONa + H2O

At equivalence point, formation of H2O occurs that contains OH- ions

This option is true

Option B

NaOH is strong base, it reacts with CH3COOH and complete the reaction mentioned above

This option is true

Option C

The statement given in option C is false because at the equivalence point pH = 7 neither greater than 7 nor less than 7

This option is false

Option D

Equivalence point is achieved when moles of base will give the moles of acid.

This option is true

Option C is the correct answer

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