UNIT 1 Introduction

Question 1

What is analytical chemistry?

Answer 1

Measurement science

Question 2

What are the two types of analysis?

Answer 2

Qualitative and Quantitative

Question 3

Assay

Answer 3

Process of determining

Question 4

Analytes

Answer 4

Contents of sample to be determined

Question 5

Matrix

Answer 5

Components of sample other than analytes

Question 6

Interference

Answer 6

Cause error in analysis via enhancing or attenuating measured quantity

Question 7

Replicates

Answer 7

Same size, same procedure

Question 8

What are the steps of quantitative analysis?

Answer 8

1. Select Method
2. Acquire Sample
3. Process Sample
4. Sample soluble
5. Is there a measurable property?
6. Measure property
7. Calculate Results
8. Estimate reliability of results
9. Interpret results

Question 9

What is an Å?

Answer 9

Anstrom 10^-10

Question 10

What are the conversions between a L and a dm^3

Answer 10

1L=1dm^3

Question 11

What are the conversions between m^3 and 1L

Answer 11

1m^3=1000L

Question 12

What are the 3 percent concentrations?

Answer 12

weight/w
volume/v
w/v
*** always solute/solution

Question 13

What are some example units for parts per million?

Answer 13

1mg/kg

1ug/g

Question 14

What is the specific gravity of a dilute aq solution ?

Answer 14

1g/mL

Question 15

What are the densities of 1ppm and 1 ppb?

Answer 15

1ppm=1mg/kg=1mg/L

1ppb=1ng/g=1ng/L

Question 16

What is a p-function?

Answer 16

pX=-log[x]

Question 17

What are the units of specific gravity?

Answer 17

kg/L