Difference between yield and selectivity

1. What is difference between yield and selectivity?
2. What is selectivity of a reaction?
3. What is the yield in chemistry?
4. What is the formula for selectivity?

What is difference between yield and selectivity?

In chemical reaction engineering, "yield", "conversion" and "selectivity" are terms used to describe ratios of how much of a reactant was consumed (conversion), how much desired product was formed (yield) in relation to the undesired product (selectivity), represented as X, Y, and S.

What is selectivity of a reaction?

DEFINITION. The selectivity of a reaction is the ratio of the desired product formed (in moles) to the undesired product formed (in moles).

What is the yield in chemistry?

2.5.

The reaction yield (absolute yield) of a chemical reaction is the amount of pure and dry product yielded in a reaction. Normally, in order to measure the efficiency of a chemical reaction in organic synthesis, the relative or percentage yield (%) is calculated.

What is the formula for selectivity?

Selectivity usually is abbreviated with the Greek letter α, and is calculated as: α = k₂ / k₁ where k₁ and k₂ are the retention factors, k, of the first and second peaks of a peak pair.