Suppose 0.035 moles of HCI is dissolved in enough water to produce 750 mL of sol

Question

Suppose 0.035 moles of HCI is dissolved in enough water to produce 750 mL of solution. What is the pH? When [H^-] = 1.0 10 M in water at 25 degree C, then A solution with a pOH of 4.30 has a [H^-] of The acidic ingredient in vinegar is acetic acid. If the pH of a particular brand of vinegar is 2.40 and the molar concentration of acetic acid in the vinegar is 0.85 M, determine the value of K, for acetic acid. Which of the following is the K expression for the conjugate base of hydrocyanic acid, HCN? The first disinfectant used by Joseph Lister was called carbolic acid. This substance now is known as phenol, C, H, OH (pK, = 9.9). What is the pH of a 0.10 M solution of phenol?

Explanation / Answer

45. Answer:- e

[H+]=[HCl]=moles of HCl/volume of solution in litres

[H+]=0.035/(750/1000)=35/750=4.666×10-2

We know

pH=-log[H+]=1.331

46. Answer:-c

For water [H+][OH-]=10-14

So [H+][OH-]=10-7

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