Acetaldehyde, CH3CHO, undergoes gas phase thermal decomposition to methane and carbon monoxide. If 0.556 mole is injected into a 1.0 L vessel at 527°C, how many moles remain after 389 hours? The rate-law expression is Rate = k[CH3CHO]?, and k = 2.4x 103 L/(mol.hr) at 527°C. Enter a number to 4 decimal places.

Acetaldehyde, CH3CHO, undergoes gas phase thermal decomposition to methane and carbon monoxide. If 0.556 mole is injected into a 1.0 L vessel at 527°C, how many moles remain after 389 hours? The rate-law expression is Rate = k[CH3CHO]?, and k = 2.4x 103 L/(mol.hr) at 527°C. Enter a number to 4 decimal places.

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.30PAE: The rate of the decomposition of hydrogen peroxide, H2O2, depends on the concentration of iodide ion...

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The rate of the decomposition of hydrogen peroxide, H2O2, depends on the concentration of iodide ion present. The rate of decomposition was measured at constant temperature and pressure for various concentrations of H2O2and of KI. The data appear below. Determine the order of reaction for each substance, write the rate law, and evaluate the rate constant. Rate [H2OJ [Kll (mL min-’) (mol L ’) (mol L ’) 0.090 0.15 0.033 0.178 0.30 0.033 0.184 0.15 0.066
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Iodomethane (CH3I) is a commonly used reagent in organic chemistry. When used properly, this reagent allows chemists to introduce methyl groups in many different useful applications. The chemical does pose a risk as a carcinogen, possibly owing to iodomethanes ability to react with portions of the DNA strand (if they were to come in contact). Consider the following hypothetical initial rates data: [DNA]0 ( mol/L) [CH3I]0 ( mol/L) Initial Rate (mol/Ls) 0.100 0.100 3.20 104 0.100 0.200 6.40 104 0.200 0.200 1.28 103 Which of the following could be a possible mechanism to explain the initial rate data? MechanismIDNA+CH3IDNACH3++IMechanismIICH3ICH3++ISlowDNA+CH3+DNACH3+Fast