Category: Chemistry

Chapter 1 class 9 CBSC matter in our surrounding notes

What is decomposition reaction give one example

What is corrosion and rancidity give a few points

Ciri terjadi reaksi kimia

Contoh reaksi kimia

Persamaan reaksi

Zat yang mempermempercepat reaksi kimia

Faktor yang mempengaruhi cepat lambatnya reaksi

Enzim dalam tubuh

Hukum kekekalan masa

Persilangan monohibrid

Percepatan gravitasi

Pembuahan

Rangkaian paralel

Kuat arus dan energi

Lab6.2

Acetonitrile + C2H5MgI = A + HoH = B

Here B is1) Acetone, 2) Acetaldehyde, 3) But-2But-2-one, 4) Butanal

Evaporation – The phenomenon of change of liquid vapours at any vapours at any temperature below it’s boiling point is called evaluation.

Factors affecting evaporation –

1) Wind energy – When the wind energy is increase then the rate of evaporation is also increase.

(Wind energy rate of evaporation )

2) Temperature – When the temperature is increase then the rate of evaporation is also increase.

(Temperature rate of evaporation )

3) Surface area- when the surface is increase then the rate of evaporation is also increase.

(Surface rate of evaporation )

4) Humidity – when the humidity is increase then the rate of evaporation is decrease.

(Humidity rate of evaporation )

Evaporation – The phenomenon of change of liquid vapours at any vapours at any temperature below it’s boiling points it is called evaluation.

Factors affecting evaporation:

1) Wind energy – when the Wind energy is increase the rate of evaluation is also increase.

2) Surface area- when the surface area is increase then the rate of evaporation is also increase.

3) Temperature- When the temperature is increase then the rate of evaporation is also increase.

4) Humidity – when the humidity is increase the rate of evaporation is decrease.

Inshort

Wind energy rate of evaporation

Surface area rate of evaporation

Temperature rate of evaporation

Humidity rate of evaporation

A sample of an ideal gas expands reversibly and isothermally at 300 K from a volume of 2 L to 10 L. The number of moles of the gas is 1 mole.

Calculate the work done by the gas during the expansion.

Use the formula for reversible isothermal expansion:

w = -nRT lnleft(frac{V_2}{V_1}right)

Given:

=

8.314

1

1

R=8.314Jmol

1

K

1

=

300

T=300K

1

=

2

V

1

=2L

2

=

10

V

2

=10L

Find:

Work done

w in Joules.

Jee and neet and MHT CET

Explain science chemistry