WAEC Chemistry 2025 Theory — Question 43

Question 43 of 70 from the West African Examinations Council (WAEC) Chemistry 2025 Theory paper, with the correct answer and a full explanation.

4(b)(iii). Describe how a 1 dm3 solution of 0.1 mol dm-3 Na2CO3 could be prepared.

Model answer

Weigh 10.6g of Na2CO3. Dissolve it in distilled water in a beaker. Transfer the content of the beaker into a 1 dm3 volumetric flask. Add distilled water up to the graduation mark.

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