This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 25.00 mL of 12 mol ... (Read 141 times)

colton

  • Hero Member
  • *****
  • Posts: 627
on: Nov 18, 2019

Question 1

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 mol L-1 methylamine, CH3NH2, with 20.00 mL of 0.10 mol L-1 methylammonium chloride, CH3NH3Cl? Assume that the volume of the solutions are additive and that Kb = 3.70 × 10-4 for methylamine.
◦ 10.97
◦ 10.17
◦ 10.57
◦ 11.78

Question 2

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 25.00 mL of 12 mol L-1 NH3 in enough water to make 1.000 L of solution? Kb = 1.80 × 10-5 for NH3.
◦ 9.43
◦ 9.08
◦ 9.26
◦ 11.32
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by colton on Nov 18, 2019

adammoses97

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly


colton

  • Member
  • Posts: 627
Reply 2 on: Nov 18, 2019
Gracias!

raenoj

  • Member
  • Posts: 340
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Respiratory system Respiratory system
TEN RULES OF PERFORMANCE IN A REDESIGNED HEALTH CARE SYSTEM TEN RULES OF PERFORMANCE IN A REDESIGNED HEALTH CARE SYSTEM
The Digestive System The Digestive System
Buffer Lab help+advice? Buffer Lab help+advice?
The Vascular System The Vascular System
The complement system The complement system
Video: HIV replication/ Replication cycle of HIV

For a complete list of videos, visit our video library