87.2 Conductivity and its application 2. Measurement of conductance K G KR=K R SS R K.三 K Cell constant R Calibration: The conductance cell is usually calibrated using standard aqueous kcl (potassium chloride)solution c/ moldm 0.001 0000.100 1.00 -1 0 0.0147 0.1411 1289 EXAMPLE The conductance of a cell containing an aqueous 0.0560 mol dm-3 KCI solution whose conductivity is 0. 753 Q2 -1. m-l is 0.0239 Q2-I When the same cell is filled with an aqueous 0.0836 mol dm-3 Nacl solution, its conductance is 0.0285 Q2- Calculate the conductivity of the Nacl solution
K G A l G = cell = s Rs = x Rx Calibration: The conductance cell is usually calibrated using standard aqueous KCl (potassium chloride ) solution. / S m 0 0.0147 0.1411 1.289 11.2 -1 c/ mol·dm 0 0.001 0.0100 0.100 1.00 -3 s x s x R R = Cell constant EXAMPLE The conductance of a cell containing an aqueous 0.0560 mol·dm-3 KCl solution whose conductivity is 0.753 -1·m-1 is 0.0239 -1 . When the same cell is filled with an aqueous 0.0836 mol·dm-3 NaCl solution, its conductance is 0.0285 -1 . Calculate the conductivity of the NaCl solution. 2. Measurement of conductance: §7.2 Conductivity and its application
87.2 Conductivity and its application 3. Influential factors of conductivity (1)Temperature 1. What can we learn from this tal fact 1 M 8 2. Why do we do electrolysis and electroplating using warm 日 electrolyte? 0.1N 05 01M 00 15 T/C
(1) Temperature 1.What can we learn from this experimental fact? 2. Why do we do electrolysis and electroplating using warm electrolyte? ice 3. Influential factors of conductivity §7.2 Conductivity and its application