Understanding pH Calculations with Casio Graphics Calculators in Chemistry
Explore how Casio graphics calculators can be used in chemistry to solve pH calculations. Learn how to calculate pH, find the logarithm of a number, and determine the concentration of H+ ions based on pH levels. Remember to pay attention to significant figures when giving your answer. Enhance your understanding of chemistry with these helpful tips and examples.
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Presentation Transcript
Casio graphics calculators and Chemistry Use to solve pH = -log [H+] [H+=] = 10-pH No Brain Too Small CHEMISTRY
Finding log of a number Select this from menu Example calculation -log 1x10-7 = 7 You press Calculator displays 7 No Brain Too Small CHEMISTRY
Finding 10-pH ( to calculate [H+]) Example find the [H+] ions in a solution if the pH is 7 [H+]= 10-pH or [H+] = invlog(-pH) Calculator will display 1.E -07 Which means 1 x 10-7 (mol L-1) No Brain Too Small CHEMISTRY
Tips Don t forget to give your answer to the required number of significant figures as stated in the question. For the unit standard this will be 3 s.f. No Brain Too Small CHEMISTRY
