12 An ideal gas is taken through the cycle 19 Heat capacity
Last updated: 6/30/2023
12 An ideal gas is taken through the cycle 19 Heat capacity Cy of an ideal gas is X K mole K To rise its temperature from298 K to 318 K heat to be supplied per 10g gas will be B C A as shown in figure If net A heat supplied to the gas in the VA in KJ MW 16 cycle is5J the 1 16X work done by the 3 32 X gas in the process 1 27K Cal 3 33K Cal C N 5 JE 15 For an ideal gas av 2 10J E H and heat capacities AH 13 Latent heat of vapourisation of a liquid at 500 K and latm pressure is 10K Cal mole What is the change is internal energy when 3 mole n liquid vapourised at the same temperature 7 HINT AHAE AnRT 2 7K Cal 4 25K Cal 202 3 15J 11 10 P N m 4 20J 14 The molar heat capacity of water at constant pressure C is 75 JK mol When 1 OKJ of heat is supplied to 100g of water which is free to expand the increase in temperature of water is 1 1 2K 2 2 4K 3 4 8K 4 6 6K is 22 Which one of the following is not a state function DAH 2 AS 3 S 4 W 23 A gas absorbs 250 J of heat and expands from 1 litre EDUCATION Me to 10 litre at constant temperature against 1 zero 4 AH 16 For a gas having molar mass M specific heat at constant pressure can be given as M 1 YR M Y 1 17 Molar heat capacity of water in equilibrium Y 3 RM R Y 1 with the ice at constant pressure is 4 YRM Y I 1 Zero 3 40 45 KJK mol 18 Heat capacity of water is 18 cal degree mol The quantity of heat needed to rise tempera ture of 18g water by 0 2 C is X cal Then amount of CH4 to be burnt to produce X cal heat is 2 Infinity 0 4 5 48 JK mol 2 6 25X an 12 20 Change in enthalpy when 11 2 dm of He at NTP is heated in a cylinder to 100 C is assume ideal behaviour Hint AH nCAT for mono atomic gas Cp 5 2R 1 623 5J 3 1227J CH 20 CO 2H O AH 200K Cal 1 1 8 x 10 mol 2 3 6 x 105 mol 3 0 0288 g 4 0 288 mg 21 In which of the following conditions increase in internal energy AE 0 is maximum 7 1 q 500J W 200J 2 q 400J W 200 4 q 400J W 1001 3 q 500J W 200J 2 1039 25J 4 520J external pressure of 0 5 atm The values of q w and AE will be respectively 1 250J 455J and 710J 2 250J 455J and 205J 3 2501 455J and 205J 4 250J 455J and 205J Heat of formation and combustion 24 Heat of combustion of C H is 337 K Cal If 5 6 lit O is used at STP in the combustion heat liberated is K Cal 1 28 08 3 42 06 1 650g 3 327g 2 14 04 4 56 16 25 Human body requires 2370 K Cal of energy daily The heat of combustion of glucose is 790 K cal mole The amount of glucose required for daily consumption is 2 540 4 490 5