Question

1.If the pOH = 9.83 in a solution of an acid with a concentration of 0.050 M, what is the acid?

2.A 0.750 M solution of Te^2- has a pH of 12.438. What is the K_b for Te^2-?

Answer 1

Hi,

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PART 1:

We know that the pH of this acid is given by,

Hence concentration of H⁺ ions is given by,

For an acid, we have,

Acid dissociation constant is given by,

Cross checking for the table with acids and their Ka values, we get that the given acid is hydrodulfuric acid (H₂S).

Note: Please post the remaining questions separately, due to limitations in solving all of them.