i) Test tube A.
- Effervescence took place / bubbles of gas produced.
- A colourless gas was produced.
ii) Test tube B.
Calcium hydroxide (lime water) formed a white precipitate
b)Sodium + Hydrochloric ? Sodium + Carbon (IV) + Water
Carbonate acid chloride oxide
marto answered the question on October 1, 2019 at 09:24
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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b) After the experiment the student concluded that substance x was pure substance. Explain why he concluded so.
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Date posted: October 1, 2019. Answers (1)
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iv) Aluminium nitrate(Solved)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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(b) State the nature of the solution when the above mentioned oxides are...(Solved)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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(a)...(Solved)
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Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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A student set-up the apparatus below in order to determine the percentage by volume of oxygen in air.
a) Why did water rise when the reaction had stopped?
b) The student wrote the expression for the percentage by volume of oxygen in air as
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Date posted: October 1, 2019. Answers (1)
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Blue litmus remained blue in both solutions. Methyl orange remained...(Solved)
Two solutions J and K were tested with blue litmus papers and methyl orange indicator.
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(b) Give an example of a substance that K is likely to be.
Date posted: October 1, 2019. Answers (1)