Inorganic Chemistry Answers

Why does a buffer solution resist the change in pH? Please provide three examples.

what is milli crystals?

the temperature of a sample of water in the liquid phase is changed from 15 degree Celsius to 25 degree Celsius by the addition of 500 calories. what is the mass of the water?

What mass of melamine, C3N3(NH2)3, will be obtained from 137.0kg of urea, CO(NH2)2, if the yield of the overall reaction is 77.0% ?
Express your answer to three significant figures and include the appropriate units.

what two things does the atomic mass depend on

What is analyzing an acid spill lab?

How many 204Pb atoms are there in an 857 mg lead sample?

A laboratory test for gastric acidity calls for 0.1 NaOH. Prepare 40.0mL of a 10X stock solution of this reagent using two NaOH solutions, one labeled 20% and the other 0.75N. How much 20% NaOH and 0.75N NaOH must be mixed together to produce 40.0mL of 10X stock?

What is the ratio of energy difference between Bohr's first orbit and second orbit,and that of between third and second orbit ?

The next three (3) problems deal with the titration of 421 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 2.1 M NaOH.

1. What is the pH of the solution at the 2nd equivalence point?


2. What will the pH of the solution be when 0.1316 L of 2.1 M NaOH are added to the 421 mL of 0.501 M carbonic acid?


3. How many mL of the 2.1 M NaOH are needed to raise the pH of the carbonic acid solution to a pH of 6.019?