CCEA GCE Life & Health Sciences Practice Questions - CCEA GCE Life And Health Sciences (Northern Ireland) Exam

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In a titration, a student rinses the burette with distilled water only, then fills it with 0.100 mol dm⁻³ NaOH. What is the most likely effect on the titre volume of NaOH needed to neutralise a fixed acid sample?

Titre decreases because water concentrates the alkali Titre increases because residual water dilutes the NaOH in the burette Titre is unchanged because water has no chemical effect Endpoint colour change becomes impossible

Correct Answer:

Titre increases because residual water dilutes the NaOH in the burette

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