Naming and Reactions Practice Test 1. What is the formula for sodium carbonate? A. Na2CO3 B. NaCO Name_______________ C. S2CO3 D. Na3CO3 C. +3 D. -3 3. Which compound is ionic? A. H2 B. KCl C. ClO3 D. NCl3 4. What is the formula for lithium phosphate? A. Li3PO4 B. LiPO4 C. Li(PO4)3 D. Li3P 2. What is the charge on the Mn ion in Mn2O3 ? A. +4 B. +2 5. What is the formula for diphosphorus pentaoxide? A. PO4 B. P2O4 C. PO5 D. P2O5 6. The name of PbCl2 is A. lead chloride C. lead (IV) chloride B. lead (II) chloride D. lead dichloride 7. What is the formula for strontium hydroxide? A. Sr (II) OH B. Sr2OH C. SrOH2 D. Sr(OH)2 8. ___ AsH3 + ___ S --> ___ As + ___ H2S A. 2 AsH3 + 2 S --> 3 As + 2 H2S is balanced by : B. 2 AsH3 + S --> 2 As + 3 H2S D. 2 AsH3 + 3 S --> 2 As + 3 H2S C. 4 AsH3 + 6 S --> 4 As + 6 H2S 9. For: LiOH + HBr --> LiBr + H2O This reaction is: A. combustion C. double replacement B. neutralization D. synthesis 10. The reaction: Br2 + CaCl2 --> CaBr2 + Cl2 + 101 kJ is A. exothermic and the flask feels cold B. exothermic and the flask feels warm C. endothermic and the flask feels cold D. endothermic and the flask feels warm 11. Consider the graph above. A. Ea is 50 kJ and reaction is endothermic B. Ea is 50 kJ and reaction is exothermic C. Ea is 30 kJ and reaction is exothermic D. Ea is -10 kJ and reaction is exothermic 12. Activation energy can be described as the A. energy of motion. B. energy of the activated complex. C. energy difference between the reactants and D. energy difference between the reactants and the products. the activated complex. 13. A chemical reaction that gives off energy is A. exothermic and H is positive. C. endothermic and H is positive. B. exothermic and H is negative. D. endothermic and H is negative. 14. Give the Lewis Dot Structures for a. Li + P b. NI3 c. PO4315. Give the full name for Au2SO4.5H2O (1 mark) 16. Write the formula (given the name) or the name (given the formula) for each. (1 mark each) a) Magnesium sulphide _______________________________________ b) acetic acid _______________________________________ c) tetrasulfur dioxide _______________________________________ d) cobalt (II) nitride _______________________________________ e) iron (III) hydroxide _______________________________________ f) _______________________________________ NH3 g) Au2SO4. 6H2O _______________________________________ h) Ca(NO3)2 _______________________________________ i) Ag4C _______________________________________ j) PCl7 _______________________________________ 17. Balance the following reactions. a. ___ LiOH + ___ Mn(SO3)3 --> b. ___ C6H14 + ___ O2 c. ___ NH3 + ___ S --> --> ___ Mn(OH)6 + ___ Li2SO3 ___ CO2 + ___ H2O ___ NS + ___ H2S d. lead (IV) phosphate + aluminum sulfate --> aluminum phosphate + lead (IV) sulfate 18. Balance the following reactions and state what kind of reaction it is. (7 marks) ___ CO2 + ___ C6H16 ---> ___ C4H8O2 type______________________ a. b. ___ H2SO4 + ___ NaOH type______________________ reaction ---> ___ Na2SO4 + ___ H2O reaction c. copper (I) sulphate + chromium (III) sulphite ---> copper (I) sulphite + chromium (III) sulphate reaction type______________________ 19. Write a balanced formula equation for the following reaction. Use correct symbols to indicate the state (ie: solid, liquid, etc.) of each substance. (3 marks) Aqueous potassium carbonate and solid sulphur react to form aqueous potassium sulphide, oxygen gas and carbon dioxide gas. 20. The psychic chemistry hotline wants you! Predict the products of the following reactions. (1 mark each) a) AlCl3 + AgNO3 -->__________________________________________________ b) I2 + BaO --> _________________________________________________________ c) CH4 + O2 --> ______________________________________________ 21. Classify the following reactions as: synthesis, decomposition, single replacement, double replacement, acid-base neutralization, and combustion reactions. (1 mark each) a. 2C2H6 + 7O2 b. 2 H2O2 4CO2 + 6H2O 2 H2O + O2 c. (NH4)2SO4 + Ba(NO3)2 d. MgI2 + Br2 e. SO3 + H2O ____________________ ____________________ BaSO4 + 2 NH4NO3 ____________________ MgBr2 + I2 H2SO4 ____________________ ___________________ 22. Write the word equation from the given formula equation (4 marks) a. FeS + 2NH4NO3 --> Fe(NO3)2 + (NH4)2S b. 2P3Cl9 + 9Cu --> 3Cu3P2 + 9Cl2 23. Write the balanced full equation of each reaction showing all states. (4 marks) a) CaCl2 + b) (NH4)3PO4 24. BeSO4 + --> KI --> = 55 kJ for the reaction: 2CaO --> 2Ca + O. a. Re-write this equation to show the 55 kJ properly on the reactant or product side. b. Sketch a potential energy graph for this reaction if the Ea = 80 kJ labelling Ea and c. Will the surroundings feel warmer or cooler as the reaction occurs? 25. For the reaction 2Ca + O2 --> 2CaO + 90kJ a. Is it endo or exothermic? b. What is the change in enthalpy for this reaction? c. Will the reactants or products have greater enthalpy? d. Will the container in which this reaction takes place feel warmer or colder than room temperature? 26. Consider the following potential energy diagram for a reversible reaction: a) Calculate the activation energy for the forward reaction. (1 mark) b) Calculate H for the forward reaction. (1 mark) 27. The combustion of coal, C, produces carbon dioxide gas according to the following equation: C(s) + O2(g) --> CO2(g) + 394 kJ a. What is the value of H for this reaction? (1 mark) b. Is this reaction endo or exothermic? (1 mark) 28. A chemist puts Na + SrCl2 into a beaker. The reaction that takes place makes the temperature of the solution rise 15 degrees celsius. a. Write the balanced equation with the correct products and the energy term on the correct side. (3 marks) b. Is this reaction endo or exothermic? (1 mark) 29. Define the term: change in enthalpy. (1 mark)