Chemistry, 17.03.2020 23:31 riri95

20ml of 2M KOH are placed into a beaker. 4M CH 3 COOH are placed into a burette.

a. Predict what volume of CH 3 COOH will be needed to neutralize the KOH.

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Answer from: recon12759

Volume of CH3COOH will be needed to neutralize the KOH is 10 ml.

Explanation:

In the titration process the concentration of unknown analyte be it acid or base is calculated by the formula:

Macid x Vacid = Mbase x Vbase equation 1

Data given:

volume of base KOH = 20 ml

molarity of base = 2M

Molarity of CH3COOH acid = 4 M

Volume of CH3COOH acid = ?

Putting the values in the equation 1

4 x V acid = 20 x 2

V acid = $\frac{40}{4}$

V acid = 10 ml

The neutralization of KOH by CH3COOH will be done by using 10 ml of 4M solution of CH3COOH against 20 ml of 2M KOH.

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

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solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

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20ml of 2M KOH are placed into a beaker. 4M CH 3 COOH are placed into a burette.

a. Pred...

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