हिंदी
तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान कक्षा ११

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

Advertisements
Advertisements

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

विकल्प

  • + 26.4 kcal

  • – 67.6 kcal

  • – 120.6 kcal

  • + 52.8 kcal

MCQ

उत्तर

– 67.6 kcal

shaalaa.com
Measurement of ΔU and ΔH Using Calorimetry
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Thermodynamics - Evaluation [पृष्ठ २२१]

APPEARS IN

सामाचीर कलवी Chemistry - Volume 1 and 2 [English] Class 11 TN Board
अध्याय 7 Thermodynamics
Evaluation | Q I. 9. | पृष्ठ २२१

संबंधित प्रश्न

The amount of heat exchanged with the surrounding at constant pressure is given by the quantity


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


When 15.68 litres of a gas mixture of methane and propane are fully combusted at 0°C and 1 atmosphere, 32 litres of oxygen at the same temperature and pressure are consumed. The amount of heat released from this combustion in kJ is (∆HC(CH4) = – 890 kJ mol−1 and ∆HC(C3H8) = – 2220 kJ mol−1)


Predict the feasibility of a reaction when both ΔH and ΔS positive.


Predict the feasibility of a reaction when both ΔH and ΔS negative.


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


Explain how heat absorbed at constant volume is measured using a bomb calorimeter with a neat diagram.


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.


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×