Problem: What is the molar concentration of a given hydrocloric acid solution?
Prediction/Hypothesis: N/A
Varibles;
Manipulated: Volume of HCl
Responding: Colour of indicator
Controlled: Volume of Na2Co3
Materials: See Page 192 in Nelson Chemistry textbook
Procedure: See Page 192 in Nelson Chemistry textbook
Observation:
Titration of HCl
Trial 1 2 3
Final buret reading (mL) 23.5 38 50
Initial buret reading (mL) 11.5 23.5 38
Volume of HCl (aq) added (mL) 12.0 14.5 12.0
Colour at end point light pink middle pink light pink

Analysis:
 
 
 
 
 
 
 
 
 
 
 
 
 

Conclusion:

Through the process of stochometry and from the information provided by the observations I conclude that the molar concentration of the given ammount of hydrochloric acid solution was about 0.781 mol/L.

Discussion:
A. Experimental Errors
People interupt the same colour differently
Miscalcaculations
B.Extended Activites: N/A
 
 
 
 
 
 
 


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