InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
What current is needed to deposit 0.5 g cr from a solution of cr3+ for 1hour |
|
Answer» From FARADAY's law of electrolysis, m=Fit×zMm= mass of the substance LIBERATED at an ELECTRODE in grams = 1gI= total ELECTRIC current passed through the substance=1.25AF= 96485 C mol−1 is the Faraday constantM= molar mass of the substance=52z= valency number of IONS of the substance (electrons transferred per ion)=3So, thetotal time required will be t=M×imFz=52×1.251×96500×3=4453.84 sec=1.24 hrhope it helps youplease mark me as brainlist |
|