# chemistry

posted by .

Which of the following when added to 100.0mL of a 0.100M soln of NH4Cl would produce a buffer soln?
a.100.0mL of 0.100 M HCl soln
b. 100.0mL of 0.050M NaOH soln
c. 100.0mL of 0.100M NaOH soln
d. 100.0mL of 0.050M NH4No3 soln
e.none of the above

• chemistry -

To be a buffered solution, what must we have? We must have a weak acid and its salt OR a weak base and its salt.
I don't see anything there that is a weak acid or base and its salt.
a is a strong acid.
b is a strong base.
c is a strong base (just a different concn).
d is the salt of a weak base and a strong acid and in a very limited set of circumstances MIGHT work. Generall, however, no.

## Similar Questions

1. ### science

Which of the following samples will react completely with 20.0 mL of 0.200 M LiOH 10.0ML of 0.100 M HCL 10.0mL of 0.200 M H2SO4 10.0mL of 0.100 M HNO3 20.0mL of 0.200 M H3PO4 20.0mL of 0.100 M HBr How do I do this problem?
2. ### Chemistry

If 50.0mL of 1.60M HCl was added to 50.0mL of 1.80M NaOH, calculate the molarity of the resulting NaCl solution. (Hint: resulting solution has a volume of 100 mL)
3. ### Chemistry

If 50.0mL of 1.60M HCl was added to 50.0mL of 1.80M NaOH, calculate the molarity of the resulting NaCl solution. (Hint: resulting solution has a volume of 100 mL)
4. ### CHEM-102

Ka for hypochlorous acid,HClO is 3.0x10^-8. Calculate the pH after 10.0, 20.0, 30.0, and 40.0mL of 0.100M NaOH have been added to 40.0mL of 0.100M HOCl.
5. ### Chemistry

During a fractional distillation of a 25mL ethanol/H2O soln, it was found that first the temperature stayed constant at ~75 C for 3mL of soln, then it went up to 100 C for the rest of the soln. The first question is: Assuming that …
6. ### chemistry

Four solution are prepared and mixed together: Start with 100.0ml of 0.100M BaCl2. Add 50.0ml of 0.100M AgNO3. Add 50.0ml of 0.100M H2So4. Add 250.0ml of 0.100M NH4. Write an equation for any reaction that occurs after each step and …
7. ### chemistry

calculate the change in pH when 9.00ml of 0.100M HCl(aq) is added to 100.0mL of a buffer solution that is 0.100M in NH3(aq) and 0.100M NH4Cl(aq). ...Calculate the change in pH when 9.00,L if 0.100M NaOH(aq) is added to the original …
8. ### chemistry

suppose u r given a conc soln of hcl which is known to be 37% hcl & has a soln density of 1.19g/ml. What is the molarity and molality of hcl in this soln
9. ### Chemistry

How would you know if a salt will produce a neutral, acidic or basic solution?
10. ### Chemistry

How would you know if a salt will produce a neutral, acidic or basic solution?

More Similar Questions