CHEMISTRY-MOD.MASTERING (18W)
8th Edition
ISBN: 9780136780922
Author: Robinson
Publisher: PEARSON
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Chapter 10, Problem 10.43SP
Interpretation Introduction
Interpretation:
The pressure within the arm attached to the ethyl alcohol in an open-end manometer is to be determined.
Concept introduction:
An open-end manometer consists of a U-shaped, poured with mercury and connected to a round bottom container that contains the gas sample. The gradient of pressure occurs because the gas exerts pressure at the open end surface of the mercury while the gas sample exerts different pressure. This pressure gradient can be measured as the difference of the height of the liquid on the two arms of the open-end manometer. Manometer is lowered on the end of the tube that experiences a greater amount of pressure.
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The reaction for obtaining NO2 from NO and O2 has the rate equation: v = k[NO]2[O2]. Indicate which of the following options is correct.(A). This rate equation is inconsistent with the reaction consisting of a single trimolecular step.(B). Since the overall order is 3, the reaction must necessarily have some trimolecular step in its mechanism.(C). A two-step mechanism: 1) NO + NO ⇄ N2O2 (fast); 2) N2O2 + O2 → NO2 + NO2 (slow).(D). The mechanism must necessarily consist of three unimolecular elementary steps with very similar rate constants.
a. What is the eluent used in the column chromatography here (a “silica plug filtration” is essentially a very short column)?
b. The spectroscopy of compound 5b is described in the second half of this excerpt, including 1H-NMR and 13C-NMR (which you will learn about in CHEM 2412L), MS (which you will learn about later in CHEM 2411L) and IR. One of the IR signals is at 3530 cm-1. What functional group does this indicate might be present in compound 5b?
Steps and explanations. Also provide, if possible, ways to adress this kind of problems in general.
Chapter 10 Solutions
CHEMISTRY-MOD.MASTERING (18W)
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