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2001 - Q28 (e) (7 marks)

 

Evaluate how environmental issues are addressed in the Solvay process.

2005 - Q28 (d) (8 marks)

 

The diagram summarises the Solvay process.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(i) Identify compound X. (1 mark)

 

(ii) During the Solvay process, ammonia is recovered. Outline the chemistry involved in the recovery of ammonia, and suggest a reason why this recovery is desirable. (2 marks)

 

(iii) Identify possible environmental issues that may arise from the Solvay process, and evaluate methods of dealing with those environmental issues. (5 marks)

2004 - Q28 (c) (7 marks)

 

Chemco Pty Ltd wishes to build two new industrial plants. One will be used for the production of sodium carbonate and the other for production of sodium hydroxide. The map shows three sites, labelled A, B and C, being considered for the location of the industrial plants.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Assess the suitability of the three sites for locating industrial plants to produce each compound.

2010 - Q32 (e) (7 marks)

 

Assess both the importance and resulting environmental impacts of using limestone in the Solvay Process.

2007 - Q28a (4 marks)

 

(a) The diagram is a flowchart of the reactions involved in an important industrial process.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(i) Identify this industrial process and write a balanced equation to represent the overall chemical reaction that occurs. (2 marks)

 

(ii) The products of the reaction formed in the tower are sodium hydrogen carbonate and ammonium chloride. Describe how these two substances are separated. (2 marks)

2012 - Q34 (d) (5 marks)

 

(i) Outline how one of the steps involved in the Solvay process can be chemically modelled in the school laboratory. Include a balanced chemical equation in your answer. (3 marks)

 

(ii) Identify ONE risk factor and ONE difficulty associated with the laboratory modelling of the step. (2 marks)

2014 - Q32 (d) (5 marks)

 

An investigation is to be conducted to model a chemical step involved in the Solvay process.

 

(i) Outline a valid procedure that could be used to carry out the investigation. (2 marks)

 

(ii) Describe TWO limitations associated with the procedure outlined in part (i). (3 marks)

2009 - Q27 (e) (7 marks)

 

The flowchart summarises the fundamental criteria that must be considered in order to find a suitable location for an industrial plant.

 

 

 

 

 

 

 

With reference to the flowchart, explain the significance of each criterion to determine a suitable location for an industrial plant to manufacture sodium carbonate.

2011 - Q33 (b) (5 marks)

 

(i) Why are the large volumes of CO2(g) produced during the Solvay process of little environmental concern? Include chemical equations in your answer. (3 marks)

 

(ii) Calcium chloride is also produced during the Solvay process. Calculate the mass of calcium chloride produced per tonne of sodium chloride used in the Solvay process. (2 marks)

2011 - Q33 (e) (7 marks)

 

Evaluate the impact on society of the environmental issues associated with THREE of the industrial processes that you have studied in this option.

2013 - Q32 (c) (5 marks)

 

The diagram shows a region where construction of a Solvay plant is being considered.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(i) Why is limestone important in the Solvay process? Include a relevant chemical equation in your response. (2 marks)

 

 (ii) Justify which of sites A or B would be the preferred location for a Solvay plant. (3 marks)

2015 - Q31 (c) (6 marks)

 

The diagram shows part of the Solvay process for producing sodium carbonate.

 

 

 

 

 

 

 

 

 

(i) Outline the chemistry of the production of sodium carbonate in the process shown. Include equations in your answer. (3 marks)

 

(ii) By making specific reference to the diagram, justify the requirements for the location of a Solvay process plant. (3 marks)

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