Observing Chemical Rxns

Observing Chemical Rxns - Post-Lab Data Summary Note some...

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Post-Lab Data Summary Note : some questions will display a variable like "nCount" or "SyInput" instead of an actual number in the data summary. Q# Question Text 5) Scoring Scheme: 3-3-2-1 Which of the following statements is the best explanation of why you must use de-ionized water rather than tap water in performing the reactions and any required dilutions? Your Answer: c. Tap water contains ions that exhibit similar reactions to those of the 4 metal salts and thereby confuse the results. You Scored 3 points out of 3 Possible 6) Scoring Scheme: 3-3-2-1. Which of the following metal salts formed a precipitate when a few drops of 6M hydrochloric acid was added? Your Answer: a. silver nitrate You Scored 3 points out of 3 Possible 7) Scoring Scheme: 3-3-2-1. Which of the following is the correct chemical equation for the reaction of strontium nitrate with sulfuric acid? Your Answer: a. Sr 2+ (aq) + SO 4 2- (aq) --> SrSO 4 (s) You Scored 3 points out of 3 Possible 8) Scoring Scheme: 3-3-2-1
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