indicator

# indicator - 1 Calculate the concentrations of H3O and the...

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1. Calculate the concentrations of H 3 O + and the pH of each acidic solution. Since HCl is a monoprotic acid, the H 3 O + concentration is equivalent to the HCl molarity. To find the new pH values, you need to find the new concentrations. Remember M1V1 = M2V2 for solutions. To find the pH, take the –log of [H 3 O + ]: The concentration of H 3 O + in tube 1 will be 5 mL of 0.1 M mixed with 5 mL of water: 0.1 M * 5 mL = 10 mL * M = 0.05 M pH = -log (0.05) = 1.30 The concentration of H 3 O + in tube 2 will be 1 mL of acid and 9 mL of water: 0.05 M * 1 mL = 10 mL * M = 0.005 M pH = -log (0.005) = 2.30 The concentration of H 3 O + in tube 3 will be 1 mL of acid and 9 mL of water: 0.005 M * 1 mL = 10 mL * M = 0.0005 M pH = -log (0.0005) = 3.30 The concentration of H 3 O + in tube 4 will be 1 mL of acid and 9 mL of water: 0.0005 M * 1 mL = 10 mL * M = 0.00005 M pH = -log (0.00005) = 4.30 The concentration of H 3 O + in tube 5 will be 1 mL of acid and 9 mL of water: 0.00005 M * 1 mL = 10 mL * M = 0.000005 M pH = -log (0.000005) = 5.30 The concentration of H 3 O + in tube 6 will be 1 mL of acid and 9 mL of water: 0.000005 M * 1 mL = 10 mL * M = 0.0000005 M

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indicator - 1 Calculate the concentrations of H3O and the...

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