Determine the cell notation for the redox reaction given below. 3 cl2(g) + 2 fe(s) --> 6 cl-(aq) + 2 fe3+(aq) ) fe3+(aq) | fe(s) || cl-(aq) | cl2(g) | pt

cl2(g) | cl-(aq) | pt || fe(s) | fe3+(aq)

fe(s) | fe3+(aq) || cl2(g) | cl-(aq) | pt

cl-(aq) | cl2(g) | pt || fe3+(aq) | fe(s)

fe(s) | cl2(g) || fe3+(aq) | cl-(aq) | pt

Fe(s) | Fe3+(aq) || Cl2(g) | Cl-(aq) | Pt

Explanation:

For the given reaction -

3 Cl₂(g) + 2 Fe(s)  →  6 Cl⁻(aq) + 2 Fe³⁺(aq)  

The reaction have two halves , where there is oxidation process as well as reduction process .

Oxidation process - the process of increase in the number of oxidation state .

And ,

Reduction process - the process of reduction of the number of oxidation state .  

Hence , from the reaction ,

Oxidation process -

Fe(s) → Fe³⁺(aq)

and ,

Reduction process -

Cl₂(g) → Cl⁻(aq)

Writing the cell notation -

The oxidation half is written first and followed by the reduction process , which is separated by the salt bridge .

hence , the cell notation for the above reaction is -

Fe(s) | Fe³⁺(aq) || Cl₂(g) | Cl⁻(aq) | Pt

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.

m=9

step-by-step explanation: