Chemistry

CHEMISTRY FINALS REVIEWER (1st Semester 2011) CHAPTER 6: THERMODYNAMICS Thermodynamics study of come alive and glamour of groove from other forms of competency Thermochemistry study of heat that accompanies individual(prenominal) and chemical substance reactions System part of the universe that we be leaving to focus on Surroundings where heat/ aptitude goes to/is from intragroup ENERGY (?E) = KE + PE A. ?E = Efinal Einitial = Eproducts Ereactants *if Efinal < Einitial = ?E (losing naught TO surroundings) *if Einitial < Efinal = +?E (losing energy FROM surroundings) B. ?E = q + w q = thermal energy = energy broadcastred amongst the system and surroundings as a result of a difference in their temperature only = mass (m) x circumscribed heat capacity (c) x transplant in temperature (?T) = m·c·?T w = work/energy transfer = work exerted when an object is moved by force = F·d IF WORK IS DONE IN GASEOUS SYSTEMS: ?H = ?E + P?V ( tack in heat content (?H) is equ al to the change in internal energy (?E) confirming the product of unceasing pressure and change in pile (P?V) Work = - P?V ( ostracize kasi kunwari when air is be pushed into the container (?P), lumiliit yung volume sa loob nung container (?V), so negative yung volume) *going back to interior ENERGY, diba yung equation ?E = q + w, you female genital organ fill in w with P?V so magiging ?E = q P?V.

pag trinanspose and stuff, magiging q = ?E + P?V or q = ?H light Capacity the gradation of heat required to change its temperature by 1 Kelvin q J ?T SI whole: K a) Specific Heat Capacity (c) the quantity of he at require to change the temperature of 1gra! m of a substance by 1K q J m?T SI Unit: g·K b) Molar Heat Capacity (C) q J moles?T SI Unit: mol·K Calorimeter used to measure the heat released/absorbed by a physical/chemical carry through -qsystem = qsurroundings -*m·c·?T+ = m·c·?T THERMOCHEMICAL EQUATIONS: ?Hrxn = amounts (moles) of substances and their states of matter in that specific equation * ?H is (-) when it is exoergic (release heat) *?H is (+) when it is...If you want to get a wide essay, differentiate it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper