Multiple choice

A researcher conducts electrochemical machining (ECM) on binary alloy (density 6000 kg/m3) of iron (atomic weight 56, valency 2) and metal P (atomic weight 24, valency 4). Faraday's constant = 96500 coulomb/mole. Volumetric material removal rate of the alloy is 50 mm3/s at a current of 2000 A. The percentage of the metal P in the alloy is closet to

  1. 40

  2. 25

  3. 15

  4. 79

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation