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Chap 1
Quiz by Goh Ban Leng
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
​The diagram shows a set-up used to obtain carbon monoxide gas
What is the purpose of solution S?
to prevent water from being drawn into the hot charcoal
to remove the presence of carbon dioxide gas
to remove the presence of water vapour
to remove the presence of hydrogen chloride gas
The diagram shows a set-up used to obtain carbon monoxide gas
What is the purpose of solution S?
A student follows the rate of the reaction when 0.2 g of magnesium, Mg reacts with excess sulfuric acid, H2SO4 at room temperature and pressure.
Mg(s) + H2SO4(aq) → MgSO4(aq) + H2(g)
What is most suitable for measuring the volume of gas produced at different times during this experiment
A gas turns moist blue litmus paper red, is insoluble in water and less dense than air.
Which diagram shows the correct way of drying and collecting the gas?
The diagram shows apparatus used to obtain carbon monoxide. Carbon dioxide produced reacts with charcoal according to the following equation.
CO2 + C → 2CO
What is the purpose of the aqueous sodium hydroxide?
The apparatus set-up shown below shows the only method that can be used to collect a dry sample of gas X.
 Which statements about gas X are true?
Â
1       Gas X has a lower density than air.
2Â Â Â Â Â Â Â Gas X is a basic oxide.
3       Gas X can be dried using concentrated sulfuric acid.
Sulfur dioxide gas can be produced and collected by reacting sodium sulfite with dilute hydrochloric acid poured into the round bottom flask using the funnel. The chemical equation is given below:
Na2SO3(s) + 2HCl(aq) → SO2(g) + 2NaCl(aq) + H2O(l)
What is the identity and purpose of solution Z?
