Stoichiometry , Conservation , Selectivity , Yield & Excess

Question 1

What are Stoichiometric coefficients?

Answer 1

The numbers that precede the chemical formulae in a chemical reaction

Question 2

What is the General Rule for the molecular formula for Alkanes

Answer 2

CnH2n+2

Question 3

Whats the ideal gas law equation

Answer 3

pV = nRT

Question 4

What are standard conditions?

Answer 4

293.15K ,1 Bar or 100000 Pa

Question 5

How much volume to gasses take up under standard temperature and pressure

Answer 5

1 mol = 22.4L

Question 6

What is a Stochiometric Quantitiy

Answer 6

relative amounts of material that allow a reaction to proceed according to the exact scheme of the balanced equation
eg. 2 H2 + 4 O2 –> 2 H20
1 mol H2 + 1/2 mol of O2 —> 1 mol of H20

2g of H2 + 16g of O2 –> 18g of H20

Question 7

What is Conversion

Answer 7

Ratio of how much of a Reactant has reacted to initially availible

Question 8

What is Yield

Answer 8

The ratio of how much product is formed experimentally to formed theroetically

Question 9

What is Selectivity

Answer 9

The amount of a desired product per amount of reactant transformed

Question 10

What’s the formula for Conversion

Answer 10

Question 11

What’s the formula for yield

Answer 11

Question 12

What the formula for selectivity

Answer 12

Question 13

What equations Links Yield, Selectivity and Conversion

Answer 13

Yield = Selectivity X Conversion

Question 14

What’s the Conversion of A

Answer 14

Question 15

What’s the yield of the production of B

Answer 15

Question 16

What’s the selectivity towards B

Answer 16