• Support PF! Buy your school textbooks, materials and every day products Here!

How many H+ ions in 0.050 ml

  • Thread starter ducmod
  • Start date
  • #1
86
0
Hello!
Here is a problem that looked easy for me, but my answer differs from the textbook's one. Please, help me to see my mistake.

How many H3O ions are present in one

drop (0.050 mL) of pure water at 25 °C?

Here is how I solved it:
There are 1.0 x 10^-7 in one liter.
We have 0.000050 liters, hence 0.00005 x 1.0 x 10^-7 = 5 x 10^-12

The book gives 3 x 10^12

Thank you!
 

Answers and Replies

  • #2
Borek
Mentor
28,360
2,751
You do understand the difference between number of moles and number of ions?
 
  • #3
86
0
You do understand the difference between number of moles and number of ions?
Oh! What a shame ) Sorry. Yes. I have to multiply my moles 5 x 10^-12 by 6.022 x 10^23
Thank you!
 

Related Threads on How many H+ ions in 0.050 ml

Replies
8
Views
18K
Replies
1
Views
3K
Replies
5
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
7
Views
5K
Replies
2
Views
2K
Replies
8
Views
8K
  • Last Post
Replies
2
Views
11K
Top