Category: CHM201 0 CHM201 1 / 50 The entropy of a pure crystal at 0 K is _________ J/K. Check 2 / 50 A process taking place at constant pressure is termed _________ Check 3 / 50 The conjugate base of HCl is __________ Check 4 / 50 The change in entropy for any process is not dependent upon the pathway by which the process occurs. In order words, the change in entropy for any process is a _________ function Check 5 / 50 The _________ scale of temperature has absolute zero for its zero point Check 6 / 50 ______________ is the amount of heat required to melt one gram of substance at its melting point. Check 7 / 50 The ___________ law of thermodynamics discusses entropy. Check 8 / 50 Which of the followings is not a type of system? Open Isolated Intensive Closed 9 / 50 The ___________ scale of temperature has absolute zero for its zero point Check 10 / 50 Rate of reaction generally ____________ with the rise of temperature. Check 11 / 50 One mole of an ideal gas is heated at a constant pressure of 101300 $N m^{-2}$, from 273.2 K to 373 K. Calculate the work involved R = 8.314 J/mol/K). 83.14 J/mol 8314 J/mol 8.314 J/mol 831.4 J/mol 12 / 50 Free energy change at equilibrium is ___________ Check 13 / 50 A substance that is capable of acting as both an acid and as a base is ______________ Check 14 / 50 The first law of thermodynamics deals with ____________ Check 15 / 50 Which of the following statements describes an isolated system? only exchange of energy with the surrounding is possible No exchange of matter and energy with the surrounding is possible only exchange of matter with the surrounding is possible exchange of both matter and energy with the surrounding is possible 16 / 50 Which of the following is not a state function? enthalpy free energy entropy work 17 / 50 For any process, the change in entropy of the universe equals the sum of entropy changes to the system and the _________ Check 18 / 50 Every type of chemical bond contains a certain amount of energy. The total bond energy, which is essentially equivalent to the total potential energy of the system, is a quantity known as: ____________ Check 19 / 50 The pH of an aqueous solution which is 0.0020 M is _________ Check 20 / 50 __________ Variables are dependent on the mass of the material. Check 21 / 50 The higher the pH, the ___________ the acidity Check 22 / 50 Rusting of iron Is an example of________ reaction Fast Slow Moderate explosive 23 / 50 Only __________ substances can undergo electrolysis. Check 24 / 50 _____________ Variables are independent of the mass of material. Check 25 / 50 The total energy of the universe is constant. This is a statement of the ___________ law of thermodynamics Check 26 / 50 The sum of all exponents of concentration terms in the rate equation is called __________ Check 27 / 50 Which of the following statements is correct? temperature is an intensive property while heat is an extensive property Temperature is an extensive property while heat is an intensive property both temperature and heat are intensive properties both temperature and heat are extensive properties. 28 / 50 The term -dx/dt in a rate expression refers to the ________ instantaneous rate of the reaction Change in concentration of the reactants with time Average rate of the reaction increase in concentration of the reactants 29 / 50 The factor that affects the rate of reaction is ___________ All of these Temperature of the reactants Catalyst Nature and concentration of the reactants 30 / 50 A solution of a weak acid and its salt is known as a ________ solution Check 31 / 50 In order for a reaction to occur, the particles must __________ Check 32 / 50 A process in which no heat is allowed to enter or leave a system is termed _______ Check 33 / 50 Which of these is true of an isochoric system? Volume remains constant Pressure is not constant Heat is allowed into the system but not allowed out of the system Takes place at constant temperature 34 / 50 In a reaction in which the rate of the reverse reaction is equal to the rate of the forward reaction, a state of __________ is attained. Check 35 / 50 The temperature at which the motion of particles theoretically ceases is known as ___________ zero. Check 36 / 50 __________ system is a system in which both energy and matter can exchange with the surroundings. Check 37 / 50 Which of these is not an extensive property of a system? Volume Energy Density Mass 38 / 50 Milk sours more rapidly in summer than in winter because ____________ in summer, the energy of activation decreases and hence the of reaction becomes fast in summer, the temperature Is high due to which effective collisions increase and hence the rate of reaction becomes fast in winter, number of molecules per unit volume increases and hence the rate of reaction becomes fast none of the above 39 / 50 In general, the rate of a reaction can be increased by all the factors except ___________ Increasing the activation energy Increasing the temperature Using a catalyst Increasing the concentration of reactants 40 / 50 Rate of reaction is defined as the __________ Rate of change of concentration Of either reactant or product per unit time Rate of change of conc. of product only None of the above Rate of change of conc. of reactant only 41 / 50 If more collisions can be made to take place in a given time, the rate of the reaction will ___________ Check 42 / 50 There are ___________ laws of thermodynamics Check 43 / 50 A reaction catalyzed by light is called a ___________ reaction Check 44 / 50 The first law of thermodynamics deals with _________ thermodynamic equivalence conservation of energy entropy absolute zero temperature. 45 / 50 1g of ice will occupy __________ space than 1g of water (less/more) Check 46 / 50 The minimum additional energy, above the average internal energy, which the reacting molecules must possess so that their collision result in a reaction is known as _____________ Check 47 / 50 The ___________ law of thermodynamics discusses entropy. Check 48 / 50 The reactions with the high value of energy of activation are _________ Fast Slow Not feasible Moderate 49 / 50 A (an) ___________ system is one which neither shows exchange of heat nor mass with its surroundings Check 50 / 50 Which of the following expressions is associated with the law of conservation of energy? dG = dH – TdS dE = q + w H = E + PV q = mCdT Restart quiz Rate this quiz Send feedback
