URGENT QUESTION
2 litre of an ideal gas at pressure 10 atm expands isothermally into vacuum until total volume is 10 litres. How much heat absorbed and work done in expansion. What could be q and w, if ----
(1) if same expansion takes against 1 atm...
(2) if same expansion takes to final volume of 10 litres conducted reversibly
one mole of an ideal gas at 300 K expands isothermally and reversibly from 5 to 20 litres. calculate the work done and heat absorbed by the gas
1g Hydrogen gas expand at STP to occupy double of its original volume . the work done during the process is :
ans: 270cal
how? and also plz tell which process is this... isobaric or isothermal since STP is given...?? or ant other??
For the reaction 1/8 S8 + 3/2 O2 - SO3, the difference of heat change at constant pressure and volume at 27'c will be
Standard heat of formation of CH4, CO2 AND H2O are -76.2, -394.8 and -241.6 kJ/mol. Calculate the amount of heat evolved by burning 1 m3 CH4 measured under normal conditions.
The specific heat of a gas is found to be 0.075 calories at constant volume and its formula weight is 40. The atomicity of the gas would be
Five moles of an ideal gas expand isothermally and reversibly from a pressure of 10 atm to 2atm at 300K. What is the largest mass which can be lifted through a height of 1m in this expression?
urgrent
the enthalpy change for the reaction of 50 ml of ethylene with 50.0 ml of H2 at 1.5 atm pressure is delta H= -0.31 Kj.what is the delta U?
Q) Latent heat of vaporisation of a liquid at 500k and 1 atm pressure is 10.0kcal/mol. What will be the change in internal energy of 3mol of liquid at the same temperature?
urgent
what is delta U when 2.0 mole of liquid water vapouries at 100 'C ? the heat of vapourisation ,delta Hvap. of water at 100 'C is 40.66 Kj/mol?
a gas expands from 3 dm3 to 5dm3 against a constant external pressure of 3 atm the work done during expansion isused to heat 10 mol of water at 290 K .calculate the final temperature of water. specific heat of wateris 4.184 J/g/K
Calculate the standard enthalpy of formation of CH3OH(l) from the following data:
CH3OH(l) + O2(g) CO2(g) + 2H2O(l) ; ΔrHθ = –726 kJ mol–1
C(g) + O2(g) CO2(g) ; ΔcHθ = –393 kJ mol–1
H2(g) +O2(g) H2O(l) ; ΔfHθ = –286 kJ mol–1.
for the reaction SO2 (g) + 1/2 O2 (g) = SO3 (g) delta H' 298=-98.32 Kj/mol
delta S'298 = -95.0 J/K/mol.
find the Kp for this reaction at 298 K
URGENT QUESTION
2 litre of an ideal gas at pressure 10 atm expands isothermally into vacuum until total volume is 10 litres. How much heat absorbed and work done in expansion. What could be q and w, if ----
(1) if same expansion takes against 1 atm...
(2) if same expansion takes to final volume of 10 litres conducted reversibly
one mole of an ideal gas at 300 K expands isothermally and reversibly from 5 to 20 litres. calculate the work done and heat absorbed by the gas
1g Hydrogen gas expand at STP to occupy double of its original volume . the work done during the process is :
ans: 270cal
how? and also plz tell which process is this... isobaric or isothermal since STP is given...?? or ant other??
Here in the question the answer according to the book is (c) i.e. 380 KJ mol-. But if we calculate the question for 1 mole of HCl then the answer is coming (b) . I want to ask that while calculating enthalpy, what stoichiometry should we use for the reactants?
For the reaction 1/8 S8 + 3/2 O2 - SO3, the difference of heat change at constant pressure and volume at 27'c will be
Standard heat of formation of CH4, CO2 AND H2O are -76.2, -394.8 and -241.6 kJ/mol. Calculate the amount of heat evolved by burning 1 m3 CH4 measured under normal conditions.
The specific heat of a gas is found to be 0.075 calories at constant volume and its formula weight is 40. The atomicity of the gas would be
Five moles of an ideal gas expand isothermally and reversibly from a pressure of 10 atm to 2atm at 300K. What is the largest mass which can be lifted through a height of 1m in this expression?
urgrent
the enthalpy change for the reaction of 50 ml of ethylene with 50.0 ml of H2 at 1.5 atm pressure is delta H= -0.31 Kj.what is the delta U?
Q) Latent heat of vaporisation of a liquid at 500k and 1 atm pressure is 10.0kcal/mol. What will be the change in internal energy of 3mol of liquid at the same temperature?
urgent
what is delta U when 2.0 mole of liquid water vapouries at 100 'C ? the heat of vapourisation ,delta Hvap. of water at 100 'C is 40.66 Kj/mol?
a gas expands from 3 dm3 to 5dm3 against a constant external pressure of 3 atm the work done during expansion isused to heat 10 mol of water at 290 K .calculate the final temperature of water. specific heat of wateris 4.184 J/g/K
Calculate the standard enthalpy of formation of CH3OH(l) from the following data:
CH3OH(l) + O2(g) CO2(g) + 2H2O(l) ; ΔrHθ = –726 kJ mol–1
C(g) + O2(g) CO2(g) ; ΔcHθ = –393 kJ mol–1
H2(g) +O2(g) H2O(l) ; ΔfHθ = –286 kJ mol–1.
urgent
for the reaction SO2 (g) + 1/2 O2 (g) = SO3 (g) delta H' 298=-98.32 Kj/mol
delta S'298 = -95.0 J/K/mol.
find the Kp for this reaction at 298 K