× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
mickey3099 mickey3099
wrote...
Posts: 28
Rep: 1 0
11 years ago
What is the sum of the pH and the pOH for a solution at 18°C, where Kw equals 5.8x10^-15?

I have no idea where to start! Any help would be appreciated! Slight Smile
I knew it was something very simple, but sometimes you just tend to overlook the easy things! Thanks soooo much!
Read 516 times
2 Replies

Related Topics

Replies
wrote...
#1
11 years ago
-log(5.8 x 10^-15) = 14.24

pH  +  pOH, at 18ºC, must add to 14.24
wrote...
#2
11 years ago
Since at 25°C, Kw = 1.0 x 10^-14, and the sum of pH and pOH in solution would equal 14, I would assume that at 18°C, where Kw = 5.8 x 10^-15, the sum of pH and pOH would be -log (5.8 . 10^-15) or - (-14.24), or 14.24.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1279 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 34
  
 235
  
 249
Your Opinion
Where do you get your textbooks?
Votes: 372
Previous poll results: Do you trust social media networks with protecting your privacy?