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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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How many grams of solid ammonium chloride should be added to 1.00 L of a 0.219 M ammonia solution to prepare a buffer with a pH of 9.970 ?
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How many grams of solid ammonium chloride should be added to 1.00 L of a 0.170 M ammonia solution to prepare a buffer with a pH of 8.680 ?
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Expert Solution
Step 1

pH is the negative logarithm of H+ concentration to the base 10 represented by:

pH = -logH+

For a more acidic solution, the concentration of H+ will be more, pH will be less and vice versa for a less acidic solution. i.e. a measure of acidity of a solution. pOH is a measure of alkalinity of a solution. For a more basic solution, pOH will be more.

Number of moles = given massmolar mass

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