In a chemical reaction an oxidising agent will …
A) lose protons - NSC Physical Sciences - Question 1 - 2016 - Paper 2
Question 1
In a chemical reaction an oxidising agent will …
A) lose protons.
B) gain protons.
C) lose electrons.
D) gain electrons.
A catalyst is added to a reaction mixtu... show full transcript
Worked Solution & Example Answer:In a chemical reaction an oxidising agent will …
A) lose protons - NSC Physical Sciences - Question 1 - 2016 - Paper 2
Step 1
In a chemical reaction an oxidising agent will …
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Answer
The correct answer is C) lose electrons, as an oxidising agent facilitates the transfer of electrons during a reaction.
Step 2
Which ONE of the following statements about the effect of the catalyst is FALSE?
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Answer
The correct answer is C) The equilibrium position shifts to the right. Catalysts do not change the position of equilibrium; they only increase the rate at which equilibrium is reached.
Step 3
What product will be formed when an alkene reacts with water vapour (H2O) in the presence of an acid catalyst?
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Answer
The correct answer is C) Alcohol. Hydration of alkenes in the presence of acid leads to the formation of alcohols.
Step 4
Which ONE of the following represents a SUBSTITUTION REACTION?
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Answer
The correct answer is A) CH2=CH2 + HBr → CH3CH2Br. This represents a substitution, where HBr replaces a hydrogen atom in the alkene.
Step 5
Which ONE of the following represents the homologous series to which compound I and compound II belong?
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Answer
The correct answer is D) Alcohols. Compounds I and II are both part of the alcohol series.
Step 6
Which of the above reactions form(s) part of the Ostwald process?
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Answer
The correct answer is A) I only. The Ostwald process involves the synthesis of nitric acid starting from ammonia.
Step 7
Which ONE of the following pairs is NOT a conjugate acid-base pair?
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Answer
The correct answer is A) H2O and OH−. While H2O can donate a proton to form OH−, this pair does not fit the conjugate acid-base model.
Step 8
Which ONE of the graphs below shows the relationship between the amount of H2(g) at equilibrium and the pressure in the container at constant temperature?
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Answer
Without the graphs visible, I cannot determine the correct answer. Typically, the graph showing a horizontal line indicates no change in amount with respect to pressure at equilibrium.
Step 9
Which of the above statements is/are TRUE?
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Answer
The correct answer is D) I and III only. The reactions will have similar initial rates, but the amount of hydrogen gas produced in both tubes may differ due to varying concentrations.
