anonymous
  • anonymous
2.00 g of NaOH are dissolved in water to make 4.00 L of solution. What is the concentration of hydronium ions, [H3O+], in this solution? How can I work this problem? The book was no help.
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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JoannaBlackwelder
  • JoannaBlackwelder
Use the idea that NaOH completely dissociates to find the moles of hydroxide ions.
JoannaBlackwelder
  • JoannaBlackwelder
Divide that by the total volume to find molarity.
JoannaBlackwelder
  • JoannaBlackwelder
Find pOH using pOH=-log[OH-}

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JoannaBlackwelder
  • JoannaBlackwelder
Find pH using pH+pOH=14
JoannaBlackwelder
  • JoannaBlackwelder
Find concentration of hydronium using pH=-log[H3O+]
anonymous
  • anonymous
So 2.00g of NAOH is equal to how many mol of NaOH? Use the molar mass? I hate stoichiometry.
JoannaBlackwelder
  • JoannaBlackwelder
Yep, molar mass and balanced dissociation reaction.

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