What mass of copper(I) oxide forms when 0.05 mol of propanal reacts completely with Fehling’s solution (Cu = 63.5, O = 16)?
Correct answer C. 7.15 g
Explanation
One mole of aldehyde produces one mole of red Cu₂O (M = 143 g mol⁻¹). 0.05 mol × 143 g mol⁻¹ = 7.15 g.
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