In: Chemistry
1. What is the effect of sunlight falling on the titration vessel?
2. In the Volhard method, proper functioning of the indicator
requires that the sample solution be
acidic. Why?
3. Which dissolved ions are present in significant amounts in the
titrated solution:
(a) during titration of the excess silver?
(b) after adding an excess of KSCN?
4. Diethyl ether is effective at preventing fading of the
end-point. Explain why fading takes place
and why diethyl ether is effective at preventing it.
5. What would be the consequence of adding significantly more than
2 mL of the ferric ammonium
sulfate indicator?
6. Determine the %(w/w) of Cl in a solid sample. The sample
(0.3721g) was treated with 50.00
mL of 0.02051M AgNO3 after dissolving it in H2O. The excess Ag+ was
titrated with 24.21 mL
of 0.01997 M KSCN.