Posted by ? on Wednesday, October 26, 2011 at 3:20pm.
Isn't this a wide open question? I might add far wide open question. Any number of about 1 million things. There is no way to answer a question like this. Would you like to put some limits on it. I could still be writing this time next year.
Haha, it says find out what could have caused the impurity in the sodium carbonate. Isn't this to do with before the titration so could I say that a substance could have contaminated it?
If you think that is the point of the question, yes. But if that is the point, the question may be related to how the Na2CO3 is prepared for sale to laboratories. Na2CO3 is a good primary standard to use for acid/base titrations; however, my experience is that we don't trust Na2CO3 in a bottle. We make our own by heating NaHCO3 at moderately low heat (I think it's about 300 C). So the answer your prof may be looking for is that the Na2CO3 in the bottle could be a mixture of the decahydrate and the monohydrate (and/or other intermediate hydrates). Hope this helps.
Yes it helps alot, many thanks!
Related Questions
science(chemistry) - why sodium carbonate against hydrochloric acid titration ...
chemistry - what are the errors in the double-indicator titration of (sodium ...
chemistry - what are the errors in the double-indicator titration of (sodium ...
Chemistry - How can i explain the key features of the periodic table relate to ...
Chem - Solutions of sodium carbonate and silver nitrate react to form solid ...
Chemistry - “1.25 g of crushed limestone was added to 50.0 cm3 of 1.00 mol ...
Chemistry - Plan how you would make 100mL of a buffer solution with a pH of 10....
Chemistry 1 - Sodium carbonate reacts with a solution of HCl solution with the ...
chemistry - which reactant in the reaction of sodium carbonate and calcium ...
chemistry - In class, we did a decomposition reaction of sodium hydrogen ...
For Further Reading
