Write the balanced equation for the neutralization reaction between h 2 so 4 and koh in aqueous solution. phases are optional.

H₂SO₄ (aq) + 2KOH (aq) →  2H₂O (l)  +  K₂SO₄ (aq)

Explanation:

Neutralization reaction occurs when an acid reacts with a base to produce water and a salt.

Ionization of the acid:

H₂SO₄ → 2H⁺  +  SO₄⁻²

Ionization of the base

KOH → K⁺  +  OH⁻

OH⁻ joins to H⁺  to make water, so the SO₄⁻² will react to the K⁺, to make potassium sulfate.

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.