Laboratory Manual Chemistry in Context
8th Edition
ISBN: 9780073518121
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Chapter 9.11, Problem 9.30YT
Skill Building Meet DEHP
DEHP belongs to a common class of plasticizers called phthalates (THAL-ates). Phthalates are esters of phthal ic (THAL-ic) acid, an isomer of terephtha lic acid, one of the monomers used to synthesize PET.
- a. Explain the meaning of the term ester.
- b. Below is the structural formula for DEHP. Circle the two ester groups in this molecule.
- c. Draw a structural formula for the alcohol that reacted with terephthalic acid to form this ester.
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Use the expression below to
⚫ calculate its value and report it to the proper number of significant digits (you may need to
round your answer).
⚫ calculate the % error (or % relative error or % inherent error)
⚫ calculate the absolute error.
(20.54±0.02 × 0.254±0.003) / (3.21±0.05) =
Value:
% Error:
Absolute error: ± |
% (only 1 significant digit)
(only 1 significant digit)
In each case (more ductile, more brittle, more tough or resistant), indicate which parameter has a larger value.
parameter Elastic limit Tensile strength
more ductile
Strain at break Strength Elastic modulus
more fragile
more tough or resistant
None
Chapter 9 Solutions
Laboratory Manual Chemistry in Context
Ch. 9.1 - Scientific Practices Tennis Anyone? Examine this...Ch. 9.1 - Prob. 9.2CTCh. 9.4 - Prob. 9.4YTCh. 9.4 - Prob. 9.5CTCh. 9.4 - Prob. 9.6CTCh. 9.4 - Prob. 9.7CTCh. 9.4 - Prob. 9.8CTCh. 9.5 - Prob. 9.9CTCh. 9.5 - Prob. 9.11CTCh. 9.5 - Skill Building Polystyrene Possibilities Show the...
Ch. 9.6 - Skill Building Esters and Polyesters You have seen...Ch. 9.6 - Prob. 9.14CTCh. 9.7 - Skill Building Kevlar Kevlar is a polyamide used...Ch. 9.8 - Prob. 9.18CTCh. 9.8 - Your Turn 9.23 Scientific Practices Landfill...Ch. 9.9 - Prob. 9.23YTCh. 9.9 - Prob. 9.24CTCh. 9.11 - Your Turn 9.31 Scientific Practices Glass or...Ch. 9.11 - Prob. 9.29CTCh. 9.11 - Skill Building Meet DEHP DEHP belongs to a common...Ch. 9 - Prob. 1QCh. 9 - Prob. 2QCh. 9 - Prob. 3QCh. 9 - Prob. 4QCh. 9 - Prob. 5QCh. 9 - Prob. 6QCh. 9 - Prob. 7QCh. 9 - Prob. 8QCh. 9 - Prob. 9QCh. 9 - Prob. 10QCh. 9 - Prob. 11QCh. 9 - Prob. 12QCh. 9 - Prob. 13QCh. 9 - Prob. 14QCh. 9 - Prob. 15QCh. 9 - Prob. 16QCh. 9 - Prob. 17QCh. 9 - Prob. 18QCh. 9 - Prob. 19QCh. 9 - Prob. 20QCh. 9 - Prob. 21QCh. 9 - Prob. 22QCh. 9 - Prob. 23QCh. 9 - Prob. 24QCh. 9 - Prob. 25QCh. 9 - Prob. 26QCh. 9 - Prob. 27QCh. 9 - Prob. 28QCh. 9 - Prob. 29QCh. 9 - Prob. 30QCh. 9 - Prob. 31QCh. 9 - Prob. 32QCh. 9 - Prob. 33QCh. 9 - Prob. 34QCh. 9 - Prob. 35QCh. 9 - Prob. 36QCh. 9 - Prob. 37QCh. 9 - Prob. 38QCh. 9 - Prob. 39QCh. 9 - Prob. 40QCh. 9 - Prob. 41QCh. 9 - Prob. 42QCh. 9 - Prob. 43QCh. 9 - Prob. 44QCh. 9 - Prob. 45QCh. 9 - Prob. 46QCh. 9 - Prob. 47QCh. 9 - Prob. 48QCh. 9 - Prob. 49QCh. 9 - Prob. 50QCh. 9 - Prob. 51QCh. 9 - Prob. 52QCh. 9 - Prob. 53QCh. 9 - Prob. 54QCh. 9 - Prob. 55QCh. 9 - Prob. 56QCh. 9 - Prob. 57QCh. 9 - Prob. 58QCh. 9 - Prob. 59Q
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