What is the difference between fractionation and distillation?

1126

What are the electrodes used in potentiometer titration?

1022

Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?

3178

What is buffer?

1119

Why is ammonia-ammonium chloride buffer added?

1174

State beer’s law.

995

Mention a few important criteria for satisfactory colorimetric analysis.

1540

What forms the basis for colorimetric determination?

1184

How is hardness of water caused?

1132

4.0 liters of oxygen are mixed with 8.0 liters of nitrogen. Identify the solute and solvent in this mixture:

1039

What are the advantages of conductometric titration over visual or potentiometric titration?

1118

What is the reaction that occurring between fas and potassium dichromate?

1280

Why is ammonia added? Why is that same amount of ammonia added?

991

Explain the term aliquot and diluent?

1336

Why is acetic acid added?

1166