Question 3.10:If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire? Chapter 3: Electrochemistry Chemistry Class 12 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire? is solved by our expert teachers. You can get ncert solutions and notes for class 12 chapter 3 absolutely free. NCERT Solutions for class 12 Chemistry Chapter 3: Electrochemistry is very essencial for getting good marks in CBSE Board examinations
Question 3.10:If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow through the wire?
Answer:Current, I = 0.5 A
Time, t = 2 hours
Convert in sec we get
Time, t = 2 × 60 × 60 s
= 7200 s
Use formula
Charge Q = It
Plug the values we get
= 0.5 A × 7200 s
= 3600 Coulombs
Number of electrons = total charge / charge on 1 electrons
= 3600/(1.6 ×1019)
=2.25 × 10M22 electrons
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