Chem Exam 2 (Memorized items)

Who was the inventor of the barometer

Torrichelli

What type of function is enthalpy?

A state function

The change in H reactions are measured by what?

H (Products - H (reactions

What is the first law of thermodynamics?

Energy cannot be created or destroyed, only transferred

What do barometers measure?

Atmospheric pressure

Heat is represented by what symbol?

q

Q + refers to ____ exchange in heat

Endothermic

Q - refers to ____ exchange in heat

exothermic

What is enthalpy?

The heat absorbed or released from a reaction

Change in heat is measured via what?

kj per mol or q (of reactant) per limiting reactant in moles

Write the equation for specific heat

q = (m)(s via j/g *c) * change in temperature

what is the formula for heat capacity?

q = (C)(change in temp) or c= j per degrees celcius in moles or grams

molar heat capacity formula

q = n (# of mols) Cm * change in temperature.

Cm = j/mol*c

Boyles Law

P₁ V_{1 =} P ₂ V₂

Charles

P₁ / T_{2 =} P₁ / T₂

Avocados law

V₁ / n_{1 =} V₂ / n₂

Ideal Gas Law

P(V) = nRT

Combined Gas Law

P₁ V_{1 /} n₁ T_{1 =} P₂ V_{2 /} n₂ T_{2 =}

Flourines oxidation #

-1

G 1A or 2A metals

+1 or +2

Hydrogen

+1

Oxygen #

-2

Group 7A

-1

Strong Acids

HCl HBr HI HNO_3 HClO_3 HClO_4 H_2PO_4