Gravimetric Analysis

Question 1

what is gravimetric analysis

Answer 1

an analystical technique used to determine the quantity of a substance in a water sample

Question 2

how does gravimetric analysis differ from electrical conductivity

Answer 2

electrical conductivity tests for the total ion concentration whereas gravimetric analysis can detrmine the exact amount of a certain ion

Question 3

steos in gravimetric analysis

Answer 3

1. prepare analyte solution 2. add an excess amount of reactant to tthe water sample to react with the analyte 3. seperate and collect the precipitate from the solution 4. wash the precipitate with distilled water to remove impurities 5. filter the sample to remove water 6. dry sample until a constant mass

Question 4

what are the requirements of gravimetric analysis

Answer 4

1. the analyte/precipate is stable and does not decompose when heated 2. the reactant oonly reacts with the analyte of interest

Question 5

why is gravimetric analysis beneficial

Answer 5

it is inexpensive and can be performed quickly and easily

Question 6

applications of gravimetric analysis

Answer 6

analysis of water and food impurities

Question 7

limitingg reactant

Answer 7

the reactant that is completely consumed in the reaction and is the limiting factor is how much product can be produced

Question 8

excess reactant

Answer 8

reactant that will be left over after teh reaction is complete