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what does exothermic and endothermic mean
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△S total = RlnKR = 8.31 K = Kc or Kp (ln is on the calculator)How does increasing the temperature of an endothermic reaction affect △Ssurr and △S total?increasing the temperature, increases △surr and therefore increases △S total (what is "K"K can be Kc or KpWhat is Qc? How do you calculate?anytime K is NOT at equilibrium, n1/v1 = n2/v2 (Kc: Qc)Steps to find Kp1. find equilibrium moles 2. calculate total moles 3. mole fraction = mol of X/total mole 4. Partial pressure = mole fraction x eq mixture at ? atm 5. Kp equation (pressure of product/reactant)equation for △S total= △Ssurr + △Ssystem△S surr== -△H/T (T is in Kelvin)△S system= total S product - total S reactantWhat do you need to remember for△S surr = -△H/T-△H is in JOULES (the question usually gives it as kJ)IMPORTANT CONCEPT if a solution in a syringe is at 50cm3 at rtp, what will it be at ice cold vs hot waterice cold - 20cm3 hot water - 70cm3 (the molecules have expandedIMPORTANTSolids do NOT count in Kp or Kc calculations because their concentration stays constant throughout the reactionWhat is Kc?product/reactantHow to calculate Kc when only moles are given*How does Kc change when temperature is changed?EXO/ENDO *Use the Kc equation logic, aka more prod/reac = INCREASE in Kc less prod/more reac = DECREASE KcHow does Kc change in an endo reaction?ENDO hotter = eq moves to right = Kc increases . colder = eq moves to the left = Kc decreasesEXO hotter = eq moves to left = Kc decreases . colder = eq moves to the right = Kc increasesunderstand how, if at all, a change in temperature, pressure or the presence of a catalyst affects the equilibrium composition in a homogeneous or heterogeneous system How does a change in temperature, pressure or presence of catalyst affect equilibrium?Position can ONLY be changed by temperature