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in an electrolytic cell a 2.2A current flows through 500mL of a o.40 M Cu 2+ solution for 20 minutes. Determine the concentration of Cu 2+ remaining in a colution, assuming the solution volume is constant. |
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Answer» Let the initial velocity of the BODY be u m/s; and the constsnt acceleration be a m/s². Then DISPLACEMET (distance covered) of the body after t second is given by s = u t + ½ a t² ———————————-(1) The body covers 20 m in 2s and 80 m in 4 s. 20 = u×2 + ½ a 2²; => 20 = 2 u + 2 a u + a = 10 —————————————(2) 80 = u×4 + ½ a 4²; => 80 = 4 u + 8 a; this gives, u + 2 a = 20 ——————————————(3) Solving (2) and (3) for u and a we get u = 0 m/s and a = 10 m/s² ————————(4) To obtain the distance covered in the next 4s we need to FIND the velocity at the beginning of this interval USING, v = u + a t => v = 0 m/s + 1... Continue Reading RELATED QUESTIONS (MORE ANSWERS BELOW) |
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