Biochem Maths

Question 1

Mol equation

Answer 1

Mass/mr

Question 2

Molarity equation

Answer 2

mol/L

Question 3

How to find the mr

Answer 3

Add up the atomic mass of each element (multiple by how many atoms of each atom there are before adding)

Question 4

Dilution equation

Answer 4

C1V1 = C2V2

Question 5

Volume of 1mol of gas

Answer 5

22.4 L

Question 6

Ph scale (how to define PH of a solution)

Answer 6

PH = -log [H+]

Question 7

Value for dissociation constant (acid)

Answer 7

Ka

Question 8

Log of dissociation constant

Answer 8

PKa

Question 9

Log on dissociation constant equation

Answer 9

PKa = -logKa

Can use the same for base

Question 10

Henderson hasselbach equation

Answer 10

PH = PKa + log ([base] / [ acid])

How to work out the PH of solutions of buffers or the PKa values of conjugate acid and base combinations at given PH

Question 11

Value for dissociation constant (base)

Answer 11

kB

Question 12

Gibbs free energy equation

Answer 12

The amount of energy in a system which is free to do work at a constant temperature and pressure

Delta G = delta H - T deltaS
(T= temperature)

Question 13

What does deltaH stand for?

Answer 13

Enthalpy change (heat change at constant pressure, measured Jmol-1)

Question 14

What does deltaS stand for?

Answer 14

Entropy change (change in systems degree of disorder)