Manipal MET2011PhysicsCurrent Electricity
A current of 1.6 A is passed through a solution of CuSO ₄ . How many Cu ⁺⁺ ions are liberated in one minute? (electronic charge =1.6 10⁻¹⁹ C )
Options
- A3 10²⁰
- B3 10¹⁹
- C6 10²⁰
- D6 10¹⁹
Correct answer
A. 3 10²⁰
Step-by-step solution
i=1.6 ~A , t=1 minute =60 ~s Charge on one Cu ⁺⁺=2 e Let n Cu ⁺⁺ are liberated from aligned Q & =n e i t & =n(2 e) 1.6 60 & =n (2 1.6 10⁻¹⁹ ) n & =3 10²⁰ ions aligned