CHEM 111-900 W17 75758772&offset-prev; wook Assignment Problem 11.52 with feedba

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CHEM 111-900 W17 75758772&offset-prev; wook Assignment Problem 11.52 with feedback-Clinical Application Signed in as Sandra Pizarro previous 21 of Problem 11.52 with feedback Clinical Application Part A Calculate the Hao of strawberries with pH 3.90 Complete the following table for a selection of foods: Express the molarity to two significant figures. Acidic, Food DHs o l loH l pH basic. neutral? 3.90 Strawberries Soy milk 7.0 x 10 7M Milk My Answers Give Up You may want to reference (u pages 416-422) Part B Section 11.6 while completing this problem. Calculate the OH-l of strawberries with pH 3.90 Express the molarity to two significant figures. OH Submit My Answers Give Up

Explanation / Answer

part A)

pH = 3.90

[H3O+] = 10-pH

[H3O+] = 10-3.90

[H3O+] = 1.26 x 10-4 M

part B) [H3O+] [OH-] = 1.0 x 10-14

[OH-] = 1.0 x 10-14 /[H3O+]

[OH-] = 1.0 x 10-14 / [1.26 x 10-4]

[OH-] = 7.94 x 10-11 M

part F)

[H3O+] [OH-] = 1.0 x 10-14

[OH-] = 1.0 x 10-14 / [H3O+]

[OH-] = 1.0 x 10-14 / 7.0 x 10-7

[OH-] = 1.43 x 10-8 M

part G)

pH = - log [H3O+]

pH = - log [7.0 x 10-7]

pH = 6.15

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