Group Assignment 6 / Study Guide Name: Naming Rules: Questions ...

Group Assignment 6 / Study Guide Name:Naming Rules:Ionic Compounds - When a metal is bonded to a nonmetal:1. Name the metal.2. Name the anion, use the first syllable and add –ide, at the end.3. IF the metal is a transition metal (not an alkali or alkaline earth metal) then a roman numeral (I, II, III, IV,etc.) must be used after the metal name to give the charge state.Covalent Compounds – When a nonmetal is bonded to a nonmetal:1. Name the first nonmetal, then the second nonmetal, use the first syllable and add an –ide, at the end.2. Identify the number of each atom type (using the subscripts) then insert the correct prefixes (mono, di, tri,tetra, etc.) before the atomic name. Remember that a mono used on the first element is left off.Questions:1. Write the names of the following ionic compounds.Ba 3 P 2 ___________ VCl 4 ___________FeBr 2 ___________ Al 2 O 3 ___________2. Write the names of the following covalent compounds.SCl 2 ___________ CCl 4 ___________Cl 3 F 5 ___________ S 2 O 3 ___________Balancing Ionic Formulas:1. Find the charge on each ion.2. Determine the ratio of the charges needed to get an overall zero charge.3. Use this ratio as the subscripts (N 2 ) in the balance formula.4. If there is a polyatomic ion being used and there are more than one, then parentheses are needed around theion, whether it is the cation or anion, example: Ba(OH) 2 .Question:3. Write the Balanced Formulas for the following Anions and Cations:NO 3-Ba 2+ Na + Fe 3+F - PO 43-O 2-V 4+NH 4+

Balancing Reactions1. Write the chemical equation using the correct molecular formulas.2. Make a list of all of the atoms on the reactants and products (if a polyatomic ion is listed on the reactants and productsthan it can be left intact and dealt with as one species).3. If the values aren’t even, begin to balance the equation by using only Coefficients in front of the molecular formulas tochange the number of molecular units. (Do not change any subscripts)4. When balancing, start with the metal atoms or carbon (in the case of a combustion reaction).5. Balance single elements in the equation last.Question:6. Are the following reactions balanced, if not, balance them.a) KClO 3 → KCl + O 2b) C 2 H 6 + O 2 → CO 2 + H 2 Oc) H 2 SO 4 + KOH→ K 2 SO 4 + H 2 Od) Mg 3 N 2 + HCl→ MgCl 2 + NH 3Reaction TypesThere are 5 common reaction types:1. A + B → AB Combination2. AB → A + B Decomposition3. A + BC → AC + B Single Replacement4. AB + CD → AD + CB Double Replacement5. C x H y + O 2 → CO 2 + H 2 O CombustionQuestion:7. Name the following reaction types:a) C 3 H 8 + 5O 2 → 3CO 2 + 4H 2 OThis never changes for combustion. Look for these.b) 2Fe(s) + AuCl 4 (aq) → Au(s) + 2FeCl 2 (aq)c) AgNO 3 (aq) + NaCl(aq) → AgCl(s) + NaNO 3 (aq)d) H 2 CO 3 → CO 2 + H 2 O

Calculating Moles and Molar Mass8. Consider the Molecule NaHClO 4 :a) What is its Molar Mass?b) How many moles are 4.56x10 24 molecules?c) How many moles are in 234.5g of it?d) How many Na atoms are in 1.23x10 -6 moles?e) How many oxygen atoms are in 2.20 moles?Chemical Equations, Limiting reagents and Percent Yield9. a) Write the balance equation for the combustion of pentane, C 5 H 12 .b) If 25.0g of pentane are combusted with 50g of O 2 , which is the limiting reagent?c) How much CO 2 , in grams, will be produced?d) If only 32.5g of CO 2 are collected, what is the percent yield?

Gas Laws10. If a balloon has an internal pressure of 1.34 atm and a volume of 2.5 L, what would the new volumebe if the pressure increased to 1.96 atm?11. A gas at 434K occupies 2.65L, what volume does it occupy if it is cooled to 236K?12. A gas occupies 43.2L at 287K with a pressure of 2.25 atm, if the pressure changes to 1.65 atm andthe volume increased to 100.0L, what is the new temperature of the gas?