What are the reactions involved for ozone layer depletion in the stratosphere?
Concept: Atmospheric Pollution > Stratospheric Pollution
The reaction, \[\ce{CO(g) + 3H2(g) ↔ CH4(g) + H2O(g)}\] is at equilibrium at 1300 K in a 1L flask. It also contains 0.30 mol of CO, 0.10 mol of H2 and 0.02 mol of H2O and an unknown amount of CH4 in the flask. Determine the concentration of CH4 in the mixture. The equilibrium constant, Kc for the reaction at the given temperature is 3.90.
Concept: Law of Chemical Equilibrium and Equilibrium Constant
For the following bond cleavages, use curved arrows to show the electron flow and classify homolysis or heterolysis. Identify reactive intermediate produced as free radical, carbocation and carbanion.
\[\ce{CH3O - OCH3 -> CH3\overset\bullet{\text{O}} + \overset\bullet{\text{O}}CH3}\]
Concept: Fundamental Concepts in Organic Reaction Mechanism > Fission of a Covalent Bond
For the following bond cleavages, use curved-arrows to show the electron flow and classify as homolysis or heterolysis. Identify reactive intermediate produced as free radical, carbocation and carbanion.
Concept: Fundamental Concepts in Organic Reaction Mechanism > Fission of a Covalent Bond
Draw the resonance structure for the following compound. Show the electron shift using curved-arrow notation.
\[\ce{CH3CH = CH\overset{+}{C}H2}\]
Concept: Fundamental Concepts in Organic Reaction Mechanism > Resonance Structure
Why do elements in the same group have similar physical and chemical properties?
Concept: Periodic Trends in Chemical Properties > Periodicity of Valence or Oxidation States
Suppose, the electron in a hydrogen atom makes transition from n = 3 to n = 2 in 10−8 s. The order of the torque acting on the electron in this period, using the relation between torque and angular momentum as discussed in the chapter on rotational mechanics is
Concept: Bohr’s Model for Hydrogen Atom
