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(i) Sample 1 and 2
(ii) Sample 2 contained ions that caused temporary hardness therefore required large volume of soap solution before boiling, but after boiling the temporary hardness was removed, hence requiring very little volume of soap solution to lather.
maurice.mutuku answered the question on October 25, 2019 at 08:21
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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(a)...(Solved)
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(b) Explain how distillation can remove hardness in sample C
Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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In an experiment to determine solubility of sodium chloride, 10.0 cm3 of a saturated solution of sodium chloride weighing 10.70g were placed in a volumetric flask and diluted to a total of 500cm3. 25.0 cm3 of the diluted solution of sodium chloride reacted completely with 24.0 cm3 of 0.1M silver nitrate solution.
I. Calculate;
(i) Moles of silver nitrate in 24.0 cm3 of solution.
(ii) Moles of NaCl in 25.0 cm3 of solution.
(iii) Moles of NaCl in 500 cm3 of solution.
(iv) Mass of NaCl in 10.0 cm3 of saturated sodium chloride (Na = 23, Cl = 35.5)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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Date posted: October 25, 2019. Answers (1)
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