1) Using a measured value of 1.78 pH, calculate the % dissociation of the 0.500 M...

1) Using a measured value of 1.78 pH, calculate the % dissociation of the 0.500 M dichloroacetic acid solution. Don't forget the correct sig figs.

2) Assume that you have a solution of AsCl₃ with a concentration of 1 x 10^-8 M. Assume the density of the solution is 1.00 g/mL. The molas mass of AsCl₃ is 181.28 g. Convert this concentration to ppb on a mass to mass basis.

Expert Solution

Ans. #1. Step 1: Calculate Ka of acid as shown below-

# Step 2: Calculate % Dissociation as shown below-

# Hence, % Dissociation = 3.32 %

#2. [AsCl₃], ppm = 1.81 x 10^-3 ppm

queen_honey_blossom answered 2 years ago

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