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Sagar Rachchh

Oct 5, 2014

DERIVE  A  RELATIONSHIP  BETWEEN  DELTA  H  AND  DELTA  U...?

This answer has an image. Please click on the question to read more.

Answer (2)

Sagar Rachchh

Dec 24, 2014

 Explain kirchoff's equation?

kirchhoff's equation relates the heat of reaction with the specific heats of a system before and after the reaction.
kirchhoff's equation is represented as dQ/dt = C – C'
Where, ...

Answer (2)

Sukirtha

Nov 9, 2014

the heat of combustion of solid benzoic acid at constant volume is -321.30 KJ at 27 degree celcius .The heat of combustion at constant pressur..

∆E = -321.30 KJ = - 321.30 X1000 = -321300J
C6H5COOH + 15/2 O2 → 7CO2 + 3 H2O
∆ n = 10-(1+15/2 )
   &...

Answer (1)

Faizaan

Dec 10, 2014

Define Enthalpy or Heat Content of a System?

Hi Faizaan!
The total heat content of a system at constant pressure is equal to t...

Answer (1)

Elvinlloyd

Dec 3, 2014

Cp – Cv = R What is R here?

Ans: Cp – Cv = R

“R...

Answer (1)

San

Feb 21, 2014

What are Intensive and extensive properties?

Intensive property is difined as it is not depend on the amount of material it is depend on the environmental conditions such are,tempreture,pressure,density,etc Extensive property is depend on the amount of...

Answer (4)

Sukirtha

Nov 9, 2014

the amount of water that can be ionised by the amount of heat liberated when 49 g sulphuric acid and 20 g of NaOH are mixed and reacted in aqueous solution is------------------- grams

Ans: Reaction between Sulphuric acid and Sodium hydroxide
H2SO4 + 2NaOH → Na2SO4 + 2H2O
This is highly exothermic reaction. The produce...

Answer (1)

Atharva Kothavale

Sep 22, 2017

Calculate the work done (in J) when 4.5 g of H2O2 reacts against a pressure of 1.0 atm at 25°C
2H2O2 (l) —→ O2 (g) + 2 H2O (l)
(a) -1.63 x 102 (b) 4.5 x 102 (c) 3.2 x 102 (d) - 6.1 x 102

Molecular mass of H2O2=34 gm/mol
4.5 gm ...

Answer (3)

Sukirtha

Nov 9, 2014

When 9.2 g of ethanol was burnt in bomb caloriemeter in excess of oxygen 320KJ heat is liberated .Then the heat of combustion of ethanol at constant volume and temperature in KJ is

Hi Sukirtha
The question seems to be incorrect. Please verify and repost it.
Generally it is not possible to maintain constant temperature after releasing heat.
The bomb calorimeter is used...

Answer (1)

Sagar Rachchh

Oct 5, 2014

DERIVE  A  RELATIONSHIP  BETWEEN  DELTA  H  AND  DELTA  U...?

This answer has an image. Please click on the question to read more.

Answer (2)

Sagar Rachchh

Dec 24, 2014

 Explain kirchoff's equation?

kirchhoff's equation relates the heat of reaction with the specific heats of a system before and after the reaction.
kirchhoff's equation is represented as dQ/dt = C – C'
Where, ...

Answer (2)

Sukirtha

Nov 9, 2014

the heat of combustion of solid benzoic acid at constant volume is -321.30 KJ at 27 degree celcius .The heat of combustion at constant pressur..

∆E = -321.30 KJ = - 321.30 X1000 = -321300J
C6H5COOH + 15/2 O2 → 7CO2 + 3 H2O
∆ n = 10-(1+15/2 )
   &...

Answer (1)

Faizaan

Dec 10, 2014

Define Enthalpy or Heat Content of a System?

Hi Faizaan!
The total heat content of a system at constant pressure is equal to t...

Answer (1)

Elvinlloyd

Dec 3, 2014

Cp – Cv = R What is R here?

Ans: Cp – Cv = R

“R...

Answer (1)

San

Feb 21, 2014

What are Intensive and extensive properties?

Intensive property is difined as it is not depend on the amount of material it is depend on the environmental conditions such are,tempreture,pressure,density,etc Extensive property is depend on the amount of...

Answer (4)

Sukirtha

Nov 9, 2014

the amount of water that can be ionised by the amount of heat liberated when 49 g sulphuric acid and 20 g of NaOH are mixed and reacted in aqueous solution is------------------- grams

Ans: Reaction between Sulphuric acid and Sodium hydroxide
H2SO4 + 2NaOH → Na2SO4 + 2H2O
This is highly exothermic reaction. The produce...

Answer (1)

Atharva Kothavale

Sep 22, 2017

Calculate the work done (in J) when 4.5 g of H2O2 reacts against a pressure of 1.0 atm at 25°C
2H2O2 (l) —→ O2 (g) + 2 H2O (l)
(a) -1.63 x 102 (b) 4.5 x 102 (c) 3.2 x 102 (d) - 6.1 x 102

Molecular mass of H2O2=34 gm/mol
4.5 gm ...

Answer (3)

Sukirtha

Nov 9, 2014

When 9.2 g of ethanol was burnt in bomb caloriemeter in excess of oxygen 320KJ heat is liberated .Then the heat of combustion of ethanol at constant volume and temperature in KJ is

Hi Sukirtha
The question seems to be incorrect. Please verify and repost it.
Generally it is not possible to maintain constant temperature after releasing heat.
The bomb calorimeter is used...

Answer (1)

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