Question

In: Chemistry

A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. (Kb...

A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. (Kb of NH3 is 1.76×10−5.)

a.)What mass of HCl can this buffer neutralize before the pH falls below 9.00?

I already did this and got 0.101 g, which is right, but I am struggling to answer Part B.

b.)If the same volume of the buffer were 0.255 M in NH3 and 0.400 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00?

The answer is not: 0.0915 or 0.0916

Solutions

Expert Solution


Related Solutions

A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. (Kb...
A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. (Kb of NH3 is 1.76×10−5.) a.)What mass of HCl can this buffer neutralize before the pH falls below 9.00? b.)If the same volume of the buffer were 0.255 M in NH3 and 0.400 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00?
A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. (Kb...
A 130.0 mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. (Kb of NH3 is 1.76×10−5.) If the same volume of the buffer were 0.255 M in NH3 and 0.400 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00? Please help me figure out the answer! I am on my last attempt. I have entered the following answers and these are NOT correct: 0.0916, 0.0915, 0.094, 0.101, 0.999, 0.0999,...
A 130.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. A)...
A 130.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. A) What mass of HCl can this buffer neutralize before the pH falls below 9.00? B) If the same volume of the buffer were 0.250 M in NH3 and 0.390 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00?
A 130.0 −mL buffer solution is 0.100 M in NH3 and 0.135 M in NH4Br. A)...
A 130.0 −mL buffer solution is 0.100 M in NH3 and 0.135 M in NH4Br. A) What mass of HCl can this buffer neutralize before the pH falls below 9.00? B) If the same volume of the buffer were 0.270 M in NH3  and 0.400 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00?
A 130.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. A)...
A 130.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. A) What mass of HCl could this buffer neutralize before the pH fell below 9.00? ​answer to this was 0.088g B) If the same volume of the buffer were 0.265 M in NH3 and 0.395 M in NH4Br, what mass of HCl could be handled before the pH fell below 9.00?
A 130.0 −mL buffer solution is 0.110 M in NH3and 0.135 M in NH4Br. What mass...
A 130.0 −mL buffer solution is 0.110 M in NH3and 0.135 M in NH4Br. What mass of HCl can this buffer neutralize before the pH falls below 9.00?
A 130.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. What...
A 130.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. What mass of HCl can this buffer neutralize before the pH falls below 9.00? If the same volume of the buffer were 0.250 M in NH3 and 0.390 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00? Need answer in grams. PS the answer is not .092
A 130.0 −mL buffer solution is 0.100 M in NH3 and 0.135 M in NH4Br. a.Part...
A 130.0 −mL buffer solution is 0.100 M in NH3 and 0.135 M in NH4Br. a.Part A What mass of HCl can this buffer neutralize before the pH falls below 9.00? b.Part B If the same volume of the buffer were 0.255 M in NH3 and 0.400 M in NH4Br, what mass of HCl could be handled before the pH falls below 9.00?
A 110.0 −mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. Part...
A 110.0 −mL buffer solution is 0.110 M in NH3 and 0.135 M in NH4Br. Part A What mass of HCl could this buffer neutralize before the pH fell below 9.00? Express your answer using two significant figures. m=? Part B If the same volume of the buffer were 0.265 M in NH3 and 0.390 M in NH4Br, what mass of HCl could be handled before the pH fell below 9.00? Express your answer using two significant figures. m=?
A 100.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. A....
A 100.0 −mL buffer solution is 0.105 M in NH3 and 0.135 M in NH4Br. A. What mass of HCl could this buffer neutralize before the pH fell below 9.00 B. If the same volume of the buffer were 0.265 M in NH3 and 0.390 M in NH4Br, what mass of HCl could be handled before the pH fell below 9.00? I know for A i have tried .19g, .0915, and .5`3 using three different methods. I have no idea...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT