Each of those is diatomic in its elemental state H 2 and N 2 The diatomic

# Each of those is diatomic in its elemental state h 2

This preview shows page 6 - 9 out of 9 pages.

composed of the elements N and H. Each of those is diatomic in its elemental state: H 2 and N 2 . The diatomic elements you should memorize are: H 2 , N 2 , O 2 , F 2 , Cl 2 , Br 2 , I 2 . (It makes an easy-to-remember pattern on the periodic table) Balanced, the reaction is 2 NH 3 3 H 2 + N 2 023 10.0points The chemical reaction 2 NaCl + H 2 SO 4 Na 2 SO 4 + 2 HCl is a 1. decomposition reaction. 2. single-replacement reaction. 3. double-replacement reaction. correct 4. synthesis reaction. Explanation: Double displacement follows the general format AX + BY AY + BX. 024 10.0points What is the coefficient of the product in the balanced equation for the reaction between calcium and hydrogen? 1. 4 2. 3 3. 1 correct 4. 5 5. 2 Explanation: The balanced equation is Ca(s) + H 2 (g) CaH 2 (g) 025 10.0points What are the products of the following reac- tion? Sr(OH) 2 + 2 HNO 3 1. SrH 2 + HNO 5 2. Sr(NO 3 ) 2 + 2 H 2 O correct 3. Sr(NO 2 ) 2 + 2 H 2 O 2 4. SrNO 3 + H 2 O Explanation: Sr(OH) 2 is a base and HNO 3 an acid; they create a salt and water. 026 10.0points When the equation Fe 2 (SO 4 ) 3 (aq) + 3 Ba(OH) 2 (aq) is completed and balanced, a term in the balanced equation is 1. 2 Fe(OH) 3 (s). correct 2. Ba 2 (SO 4 ) 3 (aq). 3. 2 Fe 2 (SO 4 ) 3 (aq). 4. 2 Fe(OH)(s). joseph (lj9344) – Reaction Types and Predicting Products – lopez – (20192020) 7 Explanation: The reaction of iron(III) sulfate and bar- ium hydroxide is a metathesis reaction with the products iron(III) hydroxide and barium sulfate. The equation is Fe 2 (SO 4 ) 3 + 3 Ba(OH) 2 3 BaSO 4 + 2 Fe(OH) 3 . 027 10.0points In the balanced chemical reaction for the neu- tralization of sodium hydroxide with sulfuric acid (H 2 SO 4 ) the coefficient of sodium hy- droxide is 1. 1. 2. 4. 3. 3. 4. 2. correct Explanation: An acid and base react to produce a salt and water. In this case the salt, formed from the available cations and anions other than H + and OH - , is sodium sulfate, Na 2 SO 4 . The equation is 2 NaOH + H 2 SO 4 Na 2 SO 4 + 2 H 2 O 028 10.0points Which is the balanced chemical equation showing hydrogen peroxide (H 2 O 2 ) decom- posing into hydrogen (H 2 ) and oxygen (O 2 )? 1. H 2 + O 2 H 2 O 2 2. 2 H 2 + O 2 2 H 2 O 2 3. 2 H 2 O 2 2 H 2 + O 2 4. H 2 O 2 H 2 + O 2 correct Explanation: Basic concept 029 10.0points 030 10.0points When gasoline is burned in an auto en- gine, the desired reaction products are carbon joseph (lj9344) – Reaction Types and Predicting Products – lopez – (20192020) 8 monoxide and water. 1. False correct 2. True Explanation: The desired reaction products are carbon dioxide and water. Carbon monoxide is an undesirable product that forms when there is insufficient oxygen present to react with the gasoline. 031 10.0points Identify the type of the reaction CaO + H 2 O Ca(OH) 2 1. displacement 2. combustion 3. acid/base neutralization 4. dissociation 5. combination correct 6. oxidation-reduction Explanation: Definition of types of reactions 032 10.0points Which is the balanced chemical equation showing hydrogen peroxide (H 2 O 2 ) decom- posing into hydrogen (H 2 ) and oxygen (O 2 )?  #### You've reached the end of your free preview.

Want to read all 9 pages?

• Summer '16
• Sodium, Chemical reaction
• • • 