Chemistry Lab Review 2

Chemistry Lab Review 2 - small test tube capillary tube...

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Unformatted text preview: small test tube capillary tube liquid T<T bp T>T bp stream of bubbles T T = bp Lab 5: Heat of formation- Enthalpy change where one mole of the reactant is formed from its elements Direct method: Mg(s) + 1/2 O 2 (g) MgO(s) Indirect Method: Hesss law 1) Mg(s) + 2 HCl(aq) MgCl 2 (aq)+ H 2 (g) 2) MgO(s) + 2 HCl(aq) MgCl 2 (aq) + H 2 O(l) <<REVERSE>> 3) H 2 (g) + O 2 (g) H 2 O(l) q rxn + q cal = 0 q cal = mcT + CT C=heat capacity (J/K); c= specific heat (J/g K); m=mass(g) Lab 6: Methyl Alcohol (Methanol): CH 3 OH Ethyl Alcohol (Ethanol): CH 3 CH 2 OH Propyl Alcohol (1- propanol; Normal Propanol): CH 3 CH 2 CH 2 OH Isopropyl Alcohol (2-propanol; Isopropanol): (CH 3 ) 2 CH OH Methyl Acetate: CH 3 O C(=O) CH 3 Ethyl Acetate: CH 3 CH 2 O C(=O) CH 3 Normal Propyl Acetate: CH 3 CH 2 CH 2 O C(=O) CH 3 Isopropyl Acetate: (CH 3 ) 2 CH O C(=O) CH 3 Dimethyl Ketone (Acetone): CH 3 C(=O) CH 3 Methyl Ethyl Ketone (2-butanone): CH 3 CH 2 C(=O) CH 3 Diethyl Ketone: CH 3 CH 2 C(=O) CH 2 CH 3 Precision for density measurement: Done on an analytical balance (+/- .0001 g) Sources of error: inaccuracy of thermometer; pipetting errors...
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Chemistry Lab Review 2 - small test tube capillary tube...

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