January 11, 2025, 01:10:45 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Solution problems  (Read 2452 times)

0 Members and 1 Guest are viewing this topic.

Offline gg6000

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
Solution problems
« on: September 18, 2011, 08:54:42 PM »
Hello I have two problems:

1. I need to prepare 1L of 40 ppm Cu solution using CuSO4*5H2O?

     This one I think I'm correct but not sure: 40 ppm * MW CuSO4*5H2O/MW of Cu should be about 157g but not sure what to due with the 1L

2. I need to prepare 100L of solution containing CaCl2 and NaCl?
The amount of Na added is not limited to a specific concentration
 10ppm Ca
 100ppm Cl

 I think 10ppm Ca and 100 ppm Cl is for what I need in the 100L

 thank you I just dont understand it
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27894
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Solution problems
« Reply #1 on: September 19, 2011, 04:57:43 AM »
What is ppm definition?
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline gg6000

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
Re: Solution problems
« Reply #2 on: September 19, 2011, 06:18:41 PM »
ppm = mg/L I believe
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27894
  • Mole Snacks: +1816/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: Solution problems
« Reply #3 on: September 20, 2011, 04:30:28 AM »
So, how many mg of copper sulfate in 1 L of 40 ppm solution?
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info
Pages: [1]   Go Up
« previous next »
Sponsored Links