Difference between selectivity and conversion

Simplistically, conversion is the disappearance of reactants during reaction. When we talk about selectivity we concentrate on the formation of a specific compound (Selective compound) during the process.

1. What is difference between selectivity and yield?
2. What is selectivity in a reaction?
3. What does conversion mean in chemical engineering?
4. What is selectivity in material balance?

What is difference between selectivity and yield?

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 in 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 does conversion mean in chemical engineering?

Conversion is defined only for the Reactants not for products, For reactant A Conversion is defined as the Number of moles of A reacted to the Total number of moles of A fed into the system(i.e. Reactor). It is a basic term in a Chemical kinetics and plays a vital role in the Chemical Reaction Engineering.

What is selectivity in material balance?

4 – Selectivity. Selectivity is defined as the moles of desired products formed divided by the moles of undesired products formed.