favorability

Examples of favorability in the following topics:

• Audience Opinion of You and Your Topic

  • Examine favorability in relation to how the audience views both you and the topic for your speech.
  • What is your favorability rating with your audience?
  • Does Congress have a high favorability rating?
  • What is the favorability rating for the Health Care Act?
  • Examine the favorability of your audience toward you and your topic

• Predicting the Direction of a Reaction

  • Equilibrium constants and reaction quotients can be used to predict whether a reaction will favor the products or the reactants.
  • Equilibrium constants can be used to predict whether a reaction will favor the products or the reactants.
  • If the reaction favors the products, it will occur in the forward (left-to-right) direction.
  • If the reaction favors the reactants, it will occur in the reverse (right-to-left) direction.
  • Therefore, the reverse reaction is favored.

• Elimination

  • E1 is favored with more substituted carbocations, which are less accessible to nucleophiles.
  • E1 is also favored with larger, stronger bases, although range of usefulness in basicity is limited is the reaction is performed under acidic conditions.
  • Finally, high temperatures favor E1.
  • Because E1 reactions are performed under thermodynamic control (at high temperature), the most thermodynamically stable product is favored.
  • As with E1, E2 favors production of the most thermodynamically stable product, so the most substituted double bond possible will be formed, and if possible the e-alkene isomer will be favored.

• Proportion

  • The pollster randomly chooses 500 registered voters and determines that 260 out of the 500 favor the candidate.
  • In other words, 0.52 of the sample favors the candidate.
  • In terms of percent, between 47.5% and 56.5% of the voters favor the candidate and the margin of error is 4.5%.
  • Keep in mind that the margin of error of 4.5% is the margin of error for the percent favoring the candidate and not the margin of error for the difference between the percent favoring the candidate and the percent favoring the opponent.

• Addition Copolymerization

  • However, the product of cationic polymerization is largely polystyrene, and anionic polymerization favors formation of poly(methyl methacrylate).
  • Formation of alternating copolymers is favored when the monomers have different polar substituents (e.g. one electron withdrawing and the other electron donating), and both have similar reactivities toward radicals.

• Arguments in Favor and Opposed to Economic Growth

  • Arguments in favor of economic growth include:
  • Economic growth has many positive effects, but a society must not favor economic growth over solving pressing social issues such as poverty.

• 1:3-Diastereoselection in Reactions with Chiral Aldehydes

  • All of the polar substituents except acetoxy display moderate to good diastereoselectivity in favor of the 1,3-anti diastereomer.
  • The anti-reactant isomer shown in the top equation adds with high diastereoselectivity favoring product isomer A.
  • Felkin-Ahn dominance favors isomer C, whereas electrostatic factors favor formation of D.
  • If the solvent is changed from methylene chloride to the less polar toluene, the diastereoselectivity shifts in favor of D in every case.
  • As expected, the E-borinates give α:β-anti diastereomers exclusively, and the Z-titanium enolates strongly favor the α:β-syn family of isomers.

• Changes in Concentration

  • If we add a species to the overall reaction, the reaction will favor the side opposing the addition of the species.
  • Likewise, the subtraction of a species would cause the reaction to fill the 'gap' and favor the side where the species was reduced.
  • Even if a desired product is not thermodynamically favored, the end-product can be obtained if it is continuously removed from the solution.

• Brønsted Acid Additions

  • Such reactions are most prone to rearrangement when this is favored by the alkene structure.

• Reactions of Ylides

  • With simple substituted ylides Z-alkenes are favored (reaction # 2).
  • Because of the additional allylic stabilization of the ylide group, the new double bonds (colored blue) have an E-configuration, in contrast to the Z-configuration favored by unstabilized ylides (equation 2).
  • The favored reaction path is therefore an internal SN2 process that leads to an epoxide product.
  • Of the two, the oxosulfonium ylide is less reactive and is thought to add reversibly to carbonyl groups, eventually forming the thermodynamically favored product.