मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता ११

The value of ∆H for cooling 2 moles of an ideal monatomic gas from 125°C to 25°C at constant pressure will be given CPR[given CP=52R] - Chemistry

Advertisements
Advertisements

प्रश्न

The value of ∆H for cooling 2 moles of an ideal monatomic gas from 125°C to 25°C at constant pressure will be `["given C"_"P" = 5/2"R"]`

पर्याय

  • – 250 R

  • – 500 R

  • 500 R

  • + 250 R

MCQ

उत्तर

– 500 R

shaalaa.com
Measurement of ΔU and ΔH Using Calorimetry
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Thermodynamics - Evaluation [पृष्ठ २२२]

APPEARS IN

सामाचीर कलवी Chemistry - Volume 1 and 2 [English] Class 11 TN Board
पाठ 7 Thermodynamics
Evaluation | Q I. 16. | पृष्ठ २२२

संबंधित प्रश्‍न

The heat of formation of CO and CO2 are – 26.4 kCal and – 94 kCal, respectively. Heat of combustion of carbon monoxide will be


C(diamond) → C(graphite), ∆H = –ve, this indicates that


The enthalpies of the formation of Al2O3 and Cr2O3 are – 1596 kJ and – 1134 kJ, respectively. ∆H for the reaction \[\ce{2Al + Cr2O3 -> 2Cr + Al2O3}\] is


If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride gas, then


Given that \[\ce{C_{(g)} + O2_{(g)} -> CO2_{(g)}}\] ∆H° = – a kJ; \[\ce{2CO_{(g)} + O2_{(g)} -> 2CO2_{(g)}}\] ∆H° = – b kJ; Calculate the ∆H° for the reaction \[\ce{C_{(g)} + 1/2O2_{(g)} -> CO_{(g)}}\]


Predict the feasibility of a reaction when ΔH decreases but ΔS increases.


What is the unit of calorific value?


In a constant volume calorimeter, 3.5 g of gas with molecular weight 28 was burnt in excess oxygen at 298 K. The temperature of the calorimeter was found to increase from 298 K to 298.45 K due to the combustion process. Given that the calorimeter constant is 2.5 kJ K−1. Calculate the enthalpy of combustion of the gas in kJ mol−1.


Calculate the standard heat of formation of propane, if its heat of combustion is −2220.2 kJ mol−1 the heats of formation of \[\ce{CO2_{(g)}}\] and \[\ce{H2O_{(l)}}\] are −393.5 and −285.8 kJ mol−1 respectively.


A gas mixture of 3.67 lit of ethylene and methane on complete combustion at 25°C and at 1 atm pressure produce 6.11 lit of carbon dioxide. Find out the amount of heat evolved in kJ, during this combustion. (ΔHC(CH4)) = − 890 kJ mol−1 and (ΔHC(C2H4)) = − 1423 kJ mol−1


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×