Can selectivity be greater than 1

1. Can selectivity be greater than 100?
2. What is overall selectivity?
3. What does high selectivity mean in chemistry?
4. Is selectivity a percentage?

Can selectivity be greater than 100?

According to the Hydrogen selectivity definition (H2 selectivity (%) = Moles of H2/Sum of the moles of CO, CO2, CH4 and C2H6), it should be a number less than 100%, but in my experimental work, some of the experiments have hydrogen selectivity more than 100%, which is due to the molar fraction of produced hydrogen more ...

What is overall selectivity?

For overall selectivity the same problem of the conflicting definitions exists. Generally, it is defined as the number of moles of desired product per the number of moles of undesired product (Definition 1).

What does high selectivity mean in chemistry?

Selectivity refers to the extent to which a method can determine particular analytes in mixtures or matrices without interferences from other components.

Is selectivity a percentage?

Selectivity is measured by the percentage of students who are admitted. The lower the percentage, the more selective the school is. Essentially, most colleges are selective to some degree. A small group of highly selective schools admits less than a third of applicants.