Properties of a Household – Science and Math Assignment Help

Assignment Task

Task

Aims:

The aim of this experiment is to measure the properties of an acid that can be found around the home, and compare the values you obtained with those from other sources.

Chemicals and equipment:

For this experiment you will need the following items: 

• 50 mL burette 
• Retort stand 
• Burette clamp 
• 25 mL pipette 
• Pipette filler 
• Conical flask 
• Small beakers 
• Wireless pH sensor 
• Ipad with SparkVue 
• Household acid (your choice) 
• 0.1 M sodium hydroxide (from Part 1) 
• Phenolphthalein 
• Rinse bottle with distilled water 
• Small glass filter funnel

Discussion:

Q. From the available data, does your acid appear to be a strong acid or a weak acid, justify your answer? 

Q. Did the titration curve for the acid from the household product match that for a solution containing just the acid and water? If not, in what way did it differ and what can you conclude from that? Does this affect your method of determining the pKa value for this acid? 

Q. How does the concentration obtained in this experiment vary with the concentrations reported from other sources? What might be the cause of discrepancies? 

Q. How do the pKa values measured in this experiment compare with other sources? How does it compare between the household product and a solution containing just acid and water? What might be the cause of discrepancies? 

Q. Assess the validity and accuracy of your experiment and the reliability of your data. 

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