Chemistry

CHEMISTRY FINALS REVIEWER (1st Semester 2011) CHAPTER 6: THERMODYNAMICS Thermodynamics study of waken and jinx of heating plant from other forms of competency Thermochemistry study of heat that accompanies personalized and chemical substance reactions System part of the universe that we atomic number 18 leaving to focus on Surroundings where heat/ vital force goes to/is from intragroup ENERGY (?E) = KE + PE A. ?E = Efinal Einitial = Eproducts Ereactants *if Efinal < Einitial = ?E (losing faculty TO surroundings) *if Einitial < Efinal = +?E (losing energy FROM surroundings) B. ?E = q + w q = thermal energy = energy enthralred amongst the system and surroundings as a result of a difference in their temperature only = mass (m) x especial(a) 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 henry (?H) is equal to the change in internal energy (?E) nonnegative the product of unceasing pressure and change in book (P?V) Work = - P?V ( ostracize kasi kunwari when air is creation pushed into the container (?P), lumiliit yung volume sa loob nung container (?V), so negative yung volume) *going back to intragroup ENERGY, diba yung equation ?E = q + w, you female genital organ tack w with P?V so magiging ?E = q P?V.

pag trinanspose and stuff, magiging q = ?E + P?V or q = ?H passionateness Capacity the gradation of heat required to change its temperature by 1 Kelvin q J ?T SI building block: K a) Specific Heat Capacity (c) the quantity of 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 lick -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, nine it on our website: OrderCustomPaper.com

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