EQUATIONS

Question 1

What is the equation for number of moles in a solid?

Answer 1

number of moles = mass(g) / molar mass(g/mol)

Question 2

What is the equation for number of moles in a liquid?

Answer 2

number of moles = concentration(mol/dm^3) * volume(dm^3)

Question 3

What volume does one mole of gas occupy at room temperature?

Answer 3

24dm^3

Question 4

What is the ideal gas equation?

Answer 4

PV=nRT, where R = 8.31 J/k/mol

Question 5

What is the equation for %yield?

Answer 5

%yield = (actual yield / theoretical yield) * 100

Question 6

What is the equation for energy transferred, Q?

Answer 6

Q = m * c * delta T, c = specific heat capacity

Question 7

What is the equation for enthalpy?

Answer 7

delta H = Q/n

Question 8

What is the form of the equilibria constant?

Answer 8

Kc = ([C]^c * [D]^d) / ([A]^a * [B]^b)

Question 9

What is the equation for pH?

Answer 9

pH = -log[H+]

Question 10

What is the equation for [H+]?

Answer 10

[H+] = 10^-pH

Question 11

What is the equation for Ka?

Answer 11

Ka = ([H+] * [X-]) / ([HX])

Question 12

What is the equation for Kw?

Answer 12

[H+] * [OH-]