Monday
March 2, 2015

Homework Help: chem

Posted by Rebekah on Tuesday, April 12, 2011 at 7:04pm.

Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? (Select all that apply.)

NaCN and HCN
NaCN and NaOH
HCN and NaOH
HCl and NaCN
HCl and NaOH

and Which of the following gives a buffer solution when equal volumes of the two solutions are mixed? (Select all that apply.)

0.10 M NH3 and 0.10 M HCl
0.20 M NH4Cl and 0.10 M NaOH
0.20 M NH3 and 0.10 M HCl
0.10 M NH4Cl and 0.10 M NH3

I know the second one is at least .20M NH3 and .10M HCl but idk what else

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chem - Which of the following pairs of substances, when mixed in any proportion ...
chem - Which of the following pairs of substances, when mixed in any proportion ...
Chemistry (repost) - Which of the following pairs of substances, when mixed in ...
chem - Calculate the pH of 0.20 M NaCN solution. NaCN ---> Na+ + CN- CN- + ...
chemistry - what is the pH of 0.80 M NaCN? what is the pH of 0.80 M NaCN? What ...
Chem - Sodium cyanide NaCN is a solid which melts at 564C to give a liquid that ...
CHM - Consider the following reaction: HCN <--> H+ + CN- delta H = 315kJ ...
chemistry - use the properties of sodium cyanide described above to deduce the ...
chemistry - Arrange the following 0.1 M solutions in order of increasing pH and ...
Chemistry - what is the pH of 0.80 M NaCN? What is the concentration of HCN in ...

Members