Chemistry, 16.10.2019 16:10 baylabrown
When you add ammonia to a solution it is important to remember that you change the concentration of the hydroxide ions present because of the reaction: nh4 (aq) + oh (aq) nh3(ac) + h2o0 remembering this will you with at least two of the steps in this exercise. in many metal-containing solutions, the addition of ammonia causes a hydroxide precipitate to form. select the statement below which best describes this observation. select one: a. the addition of nh3 causes the ph to increase thus increasing the [oh]. x b. the addition of nh3 causes the ph to decrease thus increasing the [oh]. c. the addition of nh3 results in a reaction between ammonia and oh, causing the ph to increase. d. the addition of nh3 results in a reaction between ammonia and water, causing [oh] to increase.
Answers: 3
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Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.
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