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Copyright (c) 2006-2014 MindTouch Inc.
This file and accompanying files are licensed under the MindTouch Master Subscription Agreement (MSA).
At any time, you shall not, directly or indirectly: (i) sublicense, resell, rent, lease, distribute, market, commercialize or otherwise transfer rights or usage to: (a) the Software, (b) any modified version or derivative work of the Software created by you or for you, or (c) MindTouch Open Source (which includes all non-supported versions of MindTouch-developed software), for any purpose including timesharing or service bureau purposes; (ii) remove or alter any copyright, trademark or proprietary notice in the Software; (iii) transfer, use or export the Software in violation of any applicable laws or regulations of any government or governmental agency; (iv) use or run on any of your hardware, or have deployed for use, any production version of MindTouch Open Source; (v) use any of the Support Services, Error corrections, Updates or Upgrades, for the MindTouch Open Source software or for any Server for which Support Services are not then purchased as provided hereunder; or (vi) reverse engineer, decompile or modify any encrypted or encoded portion of the Software.
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The tube filled with NO2 will produce a white solid, while the the tube with the mixture of NO and NO2 will produce a blue liquid.
The white solid is N2O4. The blue liquid is N2O3. The products are different because of various factors, including the available starting materials.
Based on the observation that N2O4 is not produced in the tube containing both NO and NO2, it can be inferred that N2O3 is a more favorable product than N2O4 under these conditions. In fact, the production of N2O3 from NO and NO2has an overall enthalpy change of only 39.71 kJ/mol, while the production of the dimer (from the Greek, "two parts") N2O4from two NO2 molecules has an enthalpy change of 57.20 kJ/mol. The more negative an enthalpy of a reaction is, the easier it is to perform the reaction (thermodynamically). In addition to this, any small quantities of N2O4 and N2O2 produced would be almost invisible (N2O4 is white and N2O2 is colorless).
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