all needed equations

Question 1

what is the equation for energy (waves)

Answer 1

∆E = h x f OR ∆E = hc/λ

Question 2

equation for dilution

Answer 2

v1 x c1 = v2 x c2

Question 3

atom economy equation

Answer 3

relative formula mass of desired product / relative formula mass of all reactants

Question 4

Rf value

Answer 4

distance travelled by sample / solvent front

Question 5

how to calculate energy change from calorimetry

Answer 5

q = mc∆T

Question 6

ideal gas equation

Answer 6

PV = nRT

Question 7

peroxidisulfate and iodide half equations

Answer 7

S₂O₈²⁻ + 5Fe²⁺ –> 2SO₄²⁻ + 2Fe³⁺ + 2I⁻ –> 2Fe³⁺ + I₂
overall:
S₂O₈²⁻ + 2I⁻ –> 2SO₄²⁻ + I₂

Question 8

contact process

Answer 8

V₂O₅ + SO₂ –> V₂O₄ + SO₃
V₂O₄ + 1/2O₂ –> V₂O₅
overall:
SO₂ + 1/2O₂ –> SO₃

Question 9

Ethanediate ions and manganese

Answer 9

MnO₄⁻ + 4Mn²⁺ + 8H⁺ –> 5Mn³⁺ + 4H₂O
2Mn³⁺ + C₂O₄²⁻ –> 2CO₂ + 2Mn²⁺

Question 10

H fuel cell (in alkaline conditions)

Answer 10

H₂ + 2OH⁻ –> 2H₂O + 2e⁻
2H₂O + O₂ + 4e⁻ –> 4OH⁻
overall:
2H₂O + O₂ –> 2H₂O

Question 11

flue gas desulfurization

Answer 11

CaO + SO₂ –> CaSO₃

Question 12

Lithium ion battery equations

Answer 12

Li+ + CoO₂- + e –> Li+CoO₂-
Li + e- –> Li+