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Calculating the mass of KOH needed to raise the pH(of H2O) to 11.5
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Topic: Calculating the mass of KOH needed to raise the pH(of H2O) to 11.5 (Read 970 times)
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moreche28
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Calculating the mass of KOH needed to raise the pH(of H2O) to 11.5
«
on:
May 17, 2021, 02:58:37 AM »
Hi.
I've got a problem to solve. Please, can anyone help?
It's the following:
How many grams of KOH must be dissolved in 10 L of water to raise its pH to 11.5?
Thank you in advance.
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Borek
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Re: Calculating the mass of KOH needed to raise the pH(of H2O) to 11.5
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Reply #1 on:
May 17, 2021, 05:17:00 AM »
Please read the
forum rules
.
You have to show your attempts at answering the question/solving the problem to receive help, it is a forum policy.
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
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Orcio_87
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Re: Calculating the mass of KOH needed to raise the pH(of H2O) to 11.5
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Reply #2 on:
May 22, 2021, 02:02:33 PM »
@armim003
1. Calculate concentration of OH- in solution with pH = 11,5.
2. Calculate mass concentration (g KOH / liter of solution).
3. For 10 liters of water, quantity of KOH is 10 times bigger.
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Calculating the mass of KOH needed to raise the pH(of H2O) to 11.5