Chem 202 Test 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| -E cell (harder or easier to remove e-) | harder to remove an electron than H
More likely to be oxidized
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| +E cell (harder or easier to remove e-) | easier to remove electron than H
More likely to be reduced
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| Nernst Equation | Ecell= Ecell - 0.059/n x log (products/reactants)
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| Faraday constant | 9.64846 x 10^4
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| - Delta G (spontaneous or non) | spontaneous
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| Delta G = -n F Ecell (kJ/mmol or J/mol) | J/mol
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| R= | 8.3145
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| -RTlnK=-nFEcell | Ecell= RTlnK/nF
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| k (0 order) | mol/Lxs
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| k (1 order) | 1/s
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| k (2 order) | L/molxs
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| k (3 order) | L2/mol2xs
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| 1st order (integrated rate law) | ln [a] = -kt + ln [a0]
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| half life- first order | t1/2= ln2/k
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| 2nd order (integrated rate law) | 1/[a] = kt + 1/[a0]
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| half life- second order | t1/2= 1/k[a]
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| zero order (integrated rate law) | [a] = -kt + [a0]
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| half life- zero order | t1/2= [a]/2k
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| k (positive/negative slope) - 1st order | negative slope
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| k (poisitve negative slope) - 2nd order | positive slope
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| k (positive negative slope) - 0 order | negative slope
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| Focus on large or small concentrations? | small
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| rate determining step | first slow reaction
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| Arrhenius Equation | lnk = - (Ea/R) (1/T) + ln[A]
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| m (Arrhenius Equation) = | -Ea/R
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| Two Point Form | ln(k2/k1) = -Ea/R (1/T2-1/T1)
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| If atomic number matches the element but the mass # is higher | Beta Emission
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| When is neutrino a product | Beta Emission and electron capture
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| If atomic # matches element but the mass # is lower | Positron emission
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| When is an antineutrino released | In positron emission
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| if atom has correct # of protons and same mass as the periodic table | electron capture (gamma)
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| when above Bismuth | alpha-decay
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| Kinetics is always what order | first
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| Rate law of kinetics | N= Ni e^-kt or
lnN = -kt + ln Ni
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