Answer to Question #100441 in General Chemistry for Malathy

Question

B. Analysis of an unknown acid
Trial 1 Trial 2 Trial3
Mass of bottle+ 108.41g 97.616g 111.9953g
unknown
Mass of bottle 108.1917g 97.42g 111.7953g
Mass of unknown 0.22g 0.196g 0.20g
Used
Final buret reading 13.1ml 23.2ml 33.0ml
Initial buret reading 0 13.1ml 23.2ml
mL of NaOH used 13.1ml 10.1ml 9.8ml
Mass of KHP in _________ ________ ________
unknown

Percent of KHP in _________ _________ __________
Unknown

Average percent of KHP_______
Standard deviation ________

Answer 1

Technical problems (two)

percent :

Weight: w(KHP) = 0,13273/0,22; 0,104142/0,196; 0,100058/0,2;

w(KHP)=0,603; 0,5313; 0,50;

medium W= 0,5451

in percen

60,3; 53,13; 50 %

54,51%