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Topic: pH calculation  (Read 5013 times)

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medbio

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pH calculation
« on: March 18, 2006, 04:34:02 AM »
Hi! Can anybody help me with this calculation?

What is the pH of a mixture of 50ml of 0.1M HCl and 30ml of 0.1M NaOH?
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Offline Albert

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Re:pH calculation
« Reply #1 on: March 18, 2006, 04:41:46 AM »
Hint: convert everything in moles and, then, focus on H+ and OH-
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Offline Borek

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Re:pH calculation
« Reply #2 on: March 18, 2006, 06:43:49 AM »
To add to Albert post: start with reaction equation. This is limiting reagent question.
« Last Edit: March 18, 2006, 06:53:31 AM by Borek »
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ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Borek

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Re:pH calculation
« Reply #3 on: March 18, 2006, 06:44:41 AM »
Quote from: The_Terminator on March 18, 2006, 06:43:02 AM
Keep in mind: Ph = Pk + C of Salt / C of Acid.

k = The constand dissension of the acid
C = the consentration

This is completely of no use, as NaOH is strong base nad HCl is strong acid.

http://www.chembuddy.com/?left=pH-calculation-questions&right=pH-of-mixture-q1
« Last Edit: March 19, 2006, 05:22:54 AM by Borek »
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ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info
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