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