pre-lab 3 ch 204

pre-lab 3 ch 204 - obennoskey (blo242) Pre-lab 3 Lyon...

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obennoskey (blo242) – Pre-lab 3 – Lyon – (52635) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. This assignment is due by 8AM on your next lecture day. The questions cover experi- ment 3. 001 10.0 points What is the main objective oF qualitative analysis? 1. to carry a chemical reaction to comple- tion 2. to improve the quality oF an analysis 3. to determine what a sample is correct 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 10.0 points How does quantitative analysis di±er From qualitative analysis in terms oF the inForma- tion you are interested in? 1. Qualitative analysis is higher quality than quantitative analysis. 2. 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 3. Qualitative analysis improves the results oF quantitative analysis. 4. Qualitative analysis and quantitative analysis are both intended to determine the same inFormation, they just do it through diF- Ferent means. 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?). 003 10.0 points What do you hope to learn From working with the known solutions in Part 1 oF the experimental procedure? 1. We hope to learn the volume oF each cell in the Microwell plate so that we know how much sample to use in Part 2.
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pre-lab 3 ch 204 - obennoskey (blo242) Pre-lab 3 Lyon...

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