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Test 3B

Test 3B

Q Question 1 0.5 / 0.5 pts Match the functional groups in these molecules (compounds A-E) to the appropriate classification. Question 2 0.5 / 0.5 pts Identify the following substances as acidic, basic, or neutral. Question 3 0.5 / 0.5 pts Determine the relationship between the following pairs of compounds. Question 4 0.5 / 0.5 pts Match the description to the acid (A-E). Name Acid pKa A. oxalic acid H2C2O4 1.19 B. citric acid H3C6H5O7 3.08 C. acetic acid HC2H3O2 4.74 D. carbonic acid H2CO3 6.37 E. boric acid H3BO3 9.24 Question 5 0.3 / 0.5 pts Match the situation or pH to the [H+]. A) [H+] = 1 x 10-12 B) [H+] = 1 x 10-8.4 C) [H+] = 1 x 10-7 D) [H+] = 1 x 10-5.6 E) [H+] = 1 x 10-2 Question 6 0.5 / 0.5 pts Match the following compounds to the names.

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1.Compound 1 Correct! Compound 2 Correct! Compound 3 Correct! Compound 4 Correct! Compound 5 2.Smelling salts (aqueoust NH3 ) Correct! Tums (CaCO3 and Mg(OH)2) Correct! Washing Soda (Na2CO3) Correct! Sour Grass (contains H2C2O4) Correct! Sweet and Sour Sauce (Sugar and vinegar) 3.trans-2-heptene and cis-3-heptene Correct! trans-2-heptene and cis-2-heptene Correct! cyclohexane and 1-hexene Correct! trans-2-heptene and trans-2-hexene Correct! 2-propanone and acetone 4.Weakest acid Correct! Strongest Acid Correct! Monoprotic acid Correct! Equal amounts of acid and conjugate base has a pH near 9. Correct! It could be used to make a buffer with a pH of 3. 4.0.01 M NaOH in water Correct Answer A Correct! pH = 12 (oven cleaner) Correct! pH = 2 (lemon juice)