Waec 2025 Chemistry Question 1

Practice practical question 1 from the 2025 Waec Chemistry examination. This question covers General .

Waec 2025 Chemistry Practical 3 Difficulty

Topic: General

Question 1 WAEC • 2025 • CHEMISTRY • practical

A was prepared by dissolving 0.825 g of HCl in \( 250 \mathrm{~cm}^{3} \) of water. B contains 4.0 g of impure \( \mathrm{NaHCO}^{3} \) per \( 250 \mathrm{~cm}^{3} \) of solution.

Question Parts

( a )

Put A in the burette and titrate it against \( 20.0 \mathrm{~cm}^{3} \) or \( 25 \mathrm{~cm}^{3} \) portion of B using methyl orange as indicator. Repeat the titration to obtain concordant titre values. Tabulate your results and calculate the average volume of A used. The equation of the reaction is: \( \begin{array}{l} \mathrm{NaHCO}_{(n)}+\mathrm{HCl}_{(n a)}-\mathrm{NaCl}_{(a m)}+\text{CO}_{2 a s}+\text{H}_{2} \mathrm{O}_{(a)} [H=1.0, C=12.0, O=16.0, \mathrm{Na}=23.0, C l=35.5] \end{array} \)

( b )

From your results and the information provided, calculate the.

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About This Question

This is Waec 2025 Chemistry Question 1. It is one of the practical questions from the 2025 Waec Chemistry examination.

The question covers General .

Difficulty level: 3 .

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