Neco Model Questions Vol1 2024 Chemistry Question 4

Practice practical question 4 from the 2024 Neco Model Questions Vol1 Chemistry examination. This question covers Mole Concept, Acid‑Base Titration .

Neco Model Questions Vol1 2024 Chemistry Practical

Topics: Mole Concept Acid‑Base Titration

Question 4 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • practical

An unknown monoprotic acid (HX) is to be analysed to determine its molar mass. A 0.345 g sample of the solid acid is dissolved in distilled water and the solution is transferred to a 250 mL conical flask. The solution is titrated with 0.100 M NaOH using phenolphthalein as indicator. The titration required 30.45 mL of NaOH to reach the endpoint.

Question Parts

( a )

Write the balanced chemical equation for the neutralisation reaction between the acid and NaOH.

( b )

Calculate the number of moles of NaOH used in the titration.

( c )

Using the stoichiometry of the reaction, calculate the number of moles of the acid present in the sample.

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About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 4. It is one of the practical questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

The question covers Mole Concept, Acid‑Base Titration .

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