Question

The mobilities of H+ and Cl at 22°C in water are 3.623 x 10-3 and 7.91 x 10-4 cm2 s-1 v1, respectively. What proportion of the current is carried by the protons in 1.0 x 10-3 mol L-1 hydrochloric acid? What fraction do they carry when the NaCI is added to the acid so that it is 1.0 mol L-1 in the salt? Note how concentration, as well as mobility governs the transport of current. (a) Given that the electric mobility of the sodium ion is 5.192 x 10-8 m2 V-l s-1, while that of the chloride ion is 7.913 x 10-8 m2 v-1 s-1. What is the electric conductivity of a 0.01 mol L-1 aqucous solution of sodium chloride? Estimate the potential difference. V. and the electric field. E. between opposite faces of a l cm3 cube of 0.01 mol L-1 sodium chloride when a current of 1.00 × 10-3 A passes through the opposite faces of the cube. (b) ) How far will the chloride ions move in 10 minutes under the influence of this electric field?

Answer 1

Bunk Pager - The Social Notebook 叶 2010へ10