anonymous
  • anonymous
The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations leading to an answer.
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
You meant this right? \[10^{-14}\]
anonymous
  • anonymous
yes
anonymous
  • anonymous
Okay. One moment

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anonymous
  • anonymous
Have you at least started the process?
anonymous
  • anonymous
kind of lost
anonymous
  • anonymous
I will try my best to help you understand
anonymous
  • anonymous
\[[H+][OH-]= Kw\] Does that look familiar?
anonymous
  • anonymous
no not really
anonymous
  • anonymous
@Shalante could you help with this?
JoannaBlackwelder
  • JoannaBlackwelder
Yes, @KimberNicoleee, that is the correct formula.
anonymous
  • anonymous
I wasn't completely sure. Thank you(:
JoannaBlackwelder
  • JoannaBlackwelder
Keep in mind that the dissociation of water makes equal moles of hydronium and hydroxide.
JoannaBlackwelder
  • JoannaBlackwelder
No problem :-) Any thoughts from here, @Dajala ?
anonymous
  • anonymous
STILL KINDA LOST CAN YOU LIKE SHOW ME STEP BY STEP
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1441062561336:dw|
JoannaBlackwelder
  • JoannaBlackwelder
So, at equilibrium, the concentrations of hydroxide and hydronium are equal.
JoannaBlackwelder
  • JoannaBlackwelder
We can sub in x for both concentrations and solve for x.
JoannaBlackwelder
  • JoannaBlackwelder
|dw:1441062951399:dw|
JoannaBlackwelder
  • JoannaBlackwelder
Does that make sense so far?
anonymous
  • anonymous
Yes thank you so much
JoannaBlackwelder
  • JoannaBlackwelder
You're welcome :-)
JoannaBlackwelder
  • JoannaBlackwelder
Can you find the concentration of hydronium from here?
anonymous
  • anonymous
5.4o kJ to use (G)(2260)=5.40 *1000=5400 2.40 g right

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