Prelab3 - patino(mp25752 – Pre-lab 3 – Lyon –(53385 1...

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Unformatted text preview: patino (mp25752) – Pre-lab 3 – Lyon – (53385) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 2.0 points What is the main objective of qualitative analysis? 1. to carry a chemical reaction to comple- tion 2. to determine what a sample is correct 3. to improve the quality of an analysis 4. to determine the amount of sample present Explanation: In qualitative analysis, you use the physical and/or chemical properties of a substance to determine what the sample is made of. 002 2.0 points How does quantitative analysis differ from qualitative analysis in terms of the informa- tion you are interested in? 1. In quantitative analysis you want to know how much sample is present, and in qualita- tive analysis you want to determine what the sample is. correct 2. Qualitative analysis and quantitative analysis are both intended to determine the same information, they just do it through dif- ferent means. 3. Qualitative analysis improves the results of quantitative analysis. 4. Qualitative analysis is higher quality than quantitative analysis. Explanation: Qualitative analysis determines what some- thing is (for example, is the acid HCl, H 2 SO 4 , or HNO 3 ?). Quantitative analysis is a mea- sure of how much of something, and the an- swer is always a number (for example, what is the concentration of the acid?)....
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This note was uploaded on 10/21/2009 for the course CH 53395 taught by Professor Lyon during the Spring '09 term at University of Texas.

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Prelab3 - patino(mp25752 – Pre-lab 3 – Lyon –(53385 1...

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