CHM 101 TYPE B CBT PRACTICE TEST

1. A reaction in which the same substance on the reactant side is being oxidized and reduced simultaneously is known as

2. The half-life of a first order reaction depends on

3. An expression which shows how a reaction is related to concentration is termed

4. Which cell involves a non-spontaneous redox reaction?

5. Catalyst speeds up the rate of

6. Water is best described as

7. Photolytic reactions take place in the presence of

8. What is the identity of the element with 6 protons, 7 Neutrons and 6 electrons

9. A substance that ionizes in solution to produce hydroxyl ion is

10. Catalyst ................... the rate of reaction by ................... the activation energy

11. The unit of rate constant, K, in a first order reaction is

12. Ozone is unstable, decomposing to oxygen, as shown in the balanced equation 2O2 ➡ 3O2. In this reaction, how many grams of oxygen can be formed from the decomposition of 96g of ozone?

13. Rate of a reaction is measured in

14. Order of a given reaction can only be determined

15. What is the oxidation number of the chromium atom in K2Cr2O4?

16. The shifting of the equilibrium position to annul the effect of changes to re-establish equilibrium is termed

17. Does temperature changes affect the equilibrium constant of a reaction?

18. A zeroth order reaction is one whose

19. Gamma radiation can be described as

20. The change in the concentration of reactant or product per unit time is known as

21. What is the minimum energy barrier that must be overcomed for a chemical reaction to occur

22. The pH of pure water is

23. What is the pH of a basic solution whose hydroxyl ion concentration is 0.00001M?

24. An element that has the valence electronic configuration 3s2 3p3 belongs to which period and group?

25. The unit of rate constant, K, in a first order reaction is

26. The powers to which the concentration of each reactant is raised to give a correct dependence of rate on concentration is termed

27. Using the method of initial rates for the reaction A➡B, if the initial concentration of A is doubled and the rate of reaction quadruples, what is the order of reaction with respect to A?

28. To balance a redox reaction in basic medium, 𝐻2𝑂 is added to the side with

29. The number of molecules/ions of the reactants present in the balanced stoichiometric equation is referred to as:

30. Substances that dissolve in water to release hydroxonium ion is known as

31. What symbol is used to express the facor,10^-6?

32. Which of the following is not used to describe the condition of a gas?

33. What is the pH of a neutral solution at 25 0C?

34. The half-life of a first order reaction depends on

35. The rate of a reaction is directly proportional to the concentration of reactants. This is referred to as

36. According to history, the concept that all matter is composed of atom was first proposed by

37. Calculate the percentage composition of Nitrogen in Magnesium Nitrate Mg(No3)2

Mg =24.31

N= 14.01

O= 16

38. A saturated solution is defined as

39. What mass of HNO3(63g/mol) is contained in 300ml of 0.30 M HNO3 solution!

40. The sum of all exponents of the reactants as contained in the experimentally determined rate law is known as