Name the law or principle confirmed by the following observations :
When 96500 coulombs of electricity is passed through acidulated water, `5*6` litres of oxygen at s.l.p. is liberated at the anode.

Explanation

To solve the question, we need to identify the law or principle that is confirmed by the observation provided. Here’s the step-by-step solution:

### Step 1: Understand the Observation
The observation states that when 96500 coulombs of electricity is passed through acidulated water, 5.6 liters of oxygen is liberated at the anode.

### Step 2: Relate the Observation to Electrolysis
In electrolysis, the amount of substance produced at an electrode is directly proportional to the quantity of electricity passed through the electrolyte. This is described by Faraday's laws of electrolysis.

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