voltameter$90797$ - определение. Что такое voltameter$90797$
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Что (кто) такое voltameter$90797$ - определение

APPARATUS FOR ELECTROLYSING WATER
Hofmann Voltameter; Hoffman voltameter; Hoffman Apparatus; Hoffman electrolysis apparatus; Hoffman apparatus; Hoffmann Apparatus
  • Hofmann voltameter

Hofmann voltameter         
A Hofmann voltameter is an apparatus for electrolysing water, invented by August Wilhelm von Hofmann (1818–1892)von Hofmann, A. W.
Voltameter         
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INSTRUMENT FOR MEASURING ELECTRIC CHARGE
Coulometer
A voltameter or coulometer is a scientific instrument used for measuring electric charge (quantity of electricity) through electrolytic action. The SI unit of electric charge is the coulomb.
Voltameter         
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INSTRUMENT FOR MEASURING ELECTRIC CHARGE
Coulometer
In general an apparatus for determining the quantity of electricity passing through a conductor by measuring the electrolytic action it can perform.

Википедия

Hofmann voltameter

A Hofmann voltameter is an apparatus for electrolysing water, invented by August Wilhelm von Hofmann (1818–1892) in 1866. It consists of three joined upright cylinders, usually glass. The inner cylinder is open at the top to allow addition of water which contains a low concentration of a compound such as sulfuric acid to improve conductivity and complete the circuit . A platinum electrode is placed inside the bottom of each of the two side cylinders, connected to the positive and negative terminals of a source of electricity. When current is run through Hofmann's voltameter, gaseous oxygen forms at the anode and gaseous hydrogen at the cathode. Each gas displaces water and collects at the top of the two outer tubes.

The tubes which collect the product gases are usually graduated, so that the volume of gas can be measured.