answer a-c

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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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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answer a-c

4. Sodium hydroxide solution was standardized against one gram of potassium acid phthalate.
First trial used 52.0 mL of the solution while the second trial used 52.4 of the solution to reach the
end point. Determine:
(a) the standardized concentration of the solution?
(b) the percent accuracy if you are going to prepare a one tenth of a molar solution
The standardized basic solution was then used in getting the total acidity of a food sample. Ten
milliliter of the acidic sample consumed 10.3mL in the first trial then 10.0mL in the second trial to
reach endpoint. Determine:
(c) the normality of the acidic sample?
Compute the total acidity of the food sample assuming that ten grams of sample was dissolved
to 25ml of solution if the sample is:
(e) Juice (MW, citric acid = 192.4; one mole citric acid reacts with three moles NAOH)
If you are a food safety inspector, would the sample pass if (include reason)
(f) The stomach can only withstand 0.39-1.1% citric acid?
Transcribed Image Text:4. Sodium hydroxide solution was standardized against one gram of potassium acid phthalate. First trial used 52.0 mL of the solution while the second trial used 52.4 of the solution to reach the end point. Determine: (a) the standardized concentration of the solution? (b) the percent accuracy if you are going to prepare a one tenth of a molar solution The standardized basic solution was then used in getting the total acidity of a food sample. Ten milliliter of the acidic sample consumed 10.3mL in the first trial then 10.0mL in the second trial to reach endpoint. Determine: (c) the normality of the acidic sample? Compute the total acidity of the food sample assuming that ten grams of sample was dissolved to 25ml of solution if the sample is: (e) Juice (MW, citric acid = 192.4; one mole citric acid reacts with three moles NAOH) If you are a food safety inspector, would the sample pass if (include reason) (f) The stomach can only withstand 0.39-1.1% citric acid?
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