629 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26PH0602 · One mole of a substance is heated from 300 K to 400 K at contant pressure. The Cp of the substance is given by, Cp (JK-1 mol-1 )=5+0.1 T… · Laws State Functions
ABC26PH0603 · One mole of an ideal gas is comlpressed from 5 L to 2 L at constant temperature. The change in entropy, in JK-1, of the gas is ____… · Laws State Functions
ABC26PH0604 · Of the following inequalities, the criteria for spontaneity of a chemical reaction is/are (i) ( Delta G)T, P<0 (ii) ( Delta U)S, V>0 (iii)… · Thermodynamics – General
ABC26PH0605 · At 1 bar and 298 K , for the process A(s) A(), the Delta G is 200 J mol-1 and Delta Vm is -2 10-6 m3 mol-1. The minimum pressure, in bar… · Free Energy Equilibria
ABC26PH0606 · For a system subjected to only P-V work, entropy is given by (I) - (( G)/( T) )P (II) (( G)/( P) )T (III) - (( A)/( V) )T (IV) - (( A)/( T)… · Laws State Functions
ABC26PH0607 · Consider an ideal gas of volume V at temperature T and pressure P. If the entropy of the gas is S, the partial derivative ( P / S)V is… · Laws State Functions
ABC26PH0608 · The standard Gibbs free energy change of the reaction shown below is -2.7 kJ mol-1. Sn(s)+Pb2+=Sn2++Pb(s) Given that E0 (Pb2+ / Pb ) is… · Free Energy Equilibria
ABC26PH0609 · The Gibbs free energy of mixing is denoted as Delta G_ max . 1.0 mole of He, 3.0 moles of Ne and 2.0 moles of Ar are mixed at the same… · Free Energy Equilibria
ABC26PH0610 · Two moles of an ideal gas X and two moles of an ideal gas Y , initially at the same temperature and pressure, are mixed under… · Laws State Functions
ABC26PH0611 · The molar heat capacity of a substance is represented in the temperature range 298 K to 400 K by the empirical relation Cp, m=14+nTJK-1… · Laws State Functions
ABC26PH0612 · The entropy change for the melting of 'x' moles of ice (heat of fusion is 80 cal g-1 ) at 273 K and 1 atm pressure is 28.80 cal K-1. The… · Laws State Functions
ABC26PH0613 · An ideal gas occupies an unknown volume V liters (L) at a pressure of 12 atm . The gas is expanded isothermally against a constant external… · Thermodynamics – General
ABC26PH0614 · Consider the following equilibrium SO2(g)+1/2 O2 SO3(g) At 298 K , the standard molar Gibbs energies of formation, Go, of SO2(g) and SO3(g)… · Free Energy Equilibria
ABC26PH0615 · When three moles of helium is mixed with one mole of neon at constant temperature and pressure (25°C, 1atm), the entropy of mixing (in… · Laws State Functions
ABC26PH0616 · Delta Gf0 and Delta Hf0 for Fe(g) are 370.7 kJ mol-1 and 416.3 kJ mol-1 at 298 K , respectively. Assuming Delta Hf0 is constant in the… · Thermodynamics – General
ABC26PH0617 · The van der Waals constants a and b for gaseous CO are given as 1.49 L2 atm mol-2 and 0.0399 L mol-1, respectively. The fugacity (in atm… · Thermodynamics – General
ABC26PH0618 · A reversible heat engine absorbs 20 kJ of heat from a source at 500 K and dissipates it to the reservoir at 400 K. The efficiency of the… · Thermodynamics – General
ABC26PH0619 · 2L of gas at 1 atm pressure is reversibly heated to reach a final volume of 3.5 L . The absolute value of the work done on the gas (rounded… · Thermodynamics – General
ABC26PH0620 · The change in enthalpy ( Delta H) for the reaction 2 P(s)+3 Br2(l) 2 PBr3(l) is -243 kJ . In this reaction, if the amount of phosphorus… · Laws State Functions
ABC26PH0621 · (being typed) · Thermodynamics & Thermochemistry – General