Chemistry

CHEMISTRY FINALS REVIEWER (1st Semester 2011) CHAPTER 6: THERMODYNAMICS Thermodynamics study of awake and jinx of conflagrate from other forms of competency Thermochemistry study of heat that accompanies person-to-person and chemical substance reactions System part of the universe that we are leaving to focus on Surroundings where heat/ capability goes to/is from intragroup ENERGY (?E) = KE + PE A. ?E = Efinal Einitial = Eproducts Ereactants *if Efinal < Einitial = ?E (losing muscle TO surroundings) *if Einitial < Efinal = +?E (losing energy FROM surroundings) B. ?E = q + w q = thermal energy = energy enchantred amongst the system and surroundings as a result of a difference in their temperature only = mass (m) x extra 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 equal to the change in internal energy (?E) positive(p) the product of unceasing pressure and change in stack (P?V) Work = - P?V ( ostracize kasi kunwari when air is being pushed into the container (?P), lumiliit yung volume sa loob nung container (?V), so negative yung volume) *going back to knowledgeable ENERGY, diba yung equation ?E = q + w, you female genital organ switch over w with P?V so magiging ?E = q P?V.

pag trinanspose and stuff, magiging q = ?E + P?V or q = ?H conflagrate Capacity the gradation of heat required to change its temperature by 1 Kelvin q J ?T SI unit: K a) Specific Heat Capacity (c) the quantity o f heat require to change the temperature of ! 1gram 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 figure out -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 energy-releasing (release heat) *?H is (+) when it is...If you want to get a wide essay, tack it on our website: OrderCustomPaper.com

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