Chemistry, 19.07.2019 17:00 melissa3333

How can scientist measure the standard reduction potential of a half cell

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Answer from: MaeWolfe

It is possible to determine the standard reduction potential of half cell by using hydrogen electrode as a reference electrode.

The standard oxidation potential of hydrogen half cell, under standard conditions, is 0 v. Hence, when an unknown half cell (say X/X-) is clubbed with hydrogen half cell, it directly gives the half cell potential of electrode of interest.

Such electrochemical cell can be represented as follows:

Pt/H2/H+//X-/X

Here, Eo cell = Eo X/X- - Eo H2/H+

But, Eo H2/H+ = 0 V

∴ Eo cell = Eo X/X-

Answer from: yenielrivera30

Pair It with a hydrogen half-cell

Explanation:

Gradpoint

Answer from: Quest

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

Write 15 uses of a mercury barometer along with its characterestics

Answer from: Quest

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How can scientist measure the standard reduction potential of a half cell...

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