U3_M1_HW-KEY

U3_M1_HW-KEY - Chemistry XXI Unit 3 Module 1-KEY Weekly...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry XXI Unit 3 Module 1-KEY Weekly Homework Combining the results of IR and MS can provide direct structural information about the molecules that make up substances. Your task is to use experimental data to determine the molecular structures of the following 4 unknowns. a) Unknown A is a pleasant smelling liquid with a boiling point of 101ºC. Elemental analysis results show that it has an empirical formual of C 3 H 6 O. Use this and the IR-MS data to determine the structure of this compound. C CH 3 CH 3 H 3 C C O O CH 3
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
b) Unknown B is an oily liquid with boiling point of 101ºC and a melting point of -13 ºC. Elemental analysis results show that it has an empirical formula of C 7 H 5 N. Use this and the IR-MS data to determine the structure of this compound. C C C C C C C N H H H H H
Background image of page 2
c) Unknown C is a colorless solid with a melting point of 103 ºC. Elemental analysis results show that it has an empirical formula of C 5 H 11 NO. Use this and the IR-MS data to determine the structure of this compound. H 3 C C H 2 H 2 C C H 2 O NH 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
d) Unknown D is a colorless gas that condenses at -26 ºC. Elemental analysis results show that it has an empirical formula of C 3 F 6 O. Use this and the IR-MS data to determine the structure of this compound. F F F F C C F F O
Background image of page 4
2. Imagine that we were able to communicate with aliens from a parallel universe. Among the information that we manage to exchange and translate into our scientific language, there is a table and some graphs containing data for some atomic properties in their universe. You have been assigned to
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

U3_M1_HW-KEY - Chemistry XXI Unit 3 Module 1-KEY Weekly...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online