Welcome to OnlineConversion.com Forums

 OnlineConversion Forums H2SO4 - Convert from percent to pH
 User Name Remember Me? Password
 [ Home ] [ Forum Home ] Register FAQ Calendar Search Today's Posts Mark Forums Read

 Convert and Calculate Post any conversion related questions and discussions here. If you're having trouble converting something, this is where you should post.* Guest Posting is allowed.

 Thread Tools Display Modes
#1
03-26-2011, 07:22 AM
 Unregistered Guest Posts: n/a
H2SO4 - Convert from percent to pH

Standard, unbuffered aqueous solution of Sulfuric Acid with a pH of 2. How many ppm?
#2
03-26-2011, 08:29 AM
 JohnS Double Ultimate Supreme Member Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,218 Rep Power: 18
Re: H2SO4 - Convert from percent to pH

Quote:
 Originally Posted by Unregistered Standard, unbuffered aqueous solution of Sulfuric Acid with a pH of 2. How many ppm?
A pH of 2 represents a H+ concentration of 0.01 Molar (moles per liter). As H2SO4 (fully ionized) contributes 2 H+ ions, 0.005 mol/L of H2S04. The molar mass is 98.1 g/mol, so 0.49 g/L of H2SO4.

What kind of ppm would you like? The mixture is dilute and 1 L is about 1 kg so either 490 mg/kg or 490 mg/L are good approximations, so 490 ppm on either w/w or w/v basis.

Computing it on a volume ratio or molar ratio would be more complex. However, it is approximately 266 µL/L or 90 µmol/mol, which are also "ppm."

Last edited by JohnS; 03-26-2011 at 08:34 AM.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may post new threads You may post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Main Forums     Convert and Calculate     Resources     General Chat

All times are GMT -8. The time now is 07:27 AM.

 Contact Us - OnlineConversion.com - Archive - Privacy Statement - Top

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd.
Copyright ©1997-2005, 2007, OnlineConversion.com