2020-2021 Review HW For Balancing, Types, Predicting And Energy Change Of Chemical Reactions

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6) A "+ΔH" is an indicator of an Exothermic or Endothermic reaction?

6)"+ΔH" is an indicator of an Exothermic or Endothermic reaction?



Part I: Balance the chemical reaction and give the correct type of reaction for the following:

1) ___ Ca1Br2 + ____ Na3P1 ==> ____ Ca3P2 + ____ Na1Br1  Type of Rxn:____________________



2) ___ Li3P1O4 ==> ____ Li + ____P + ____ O2  Type of Rxn:____________________



3) ___ C8H18 + ____ O2 ==> ____ C1O2 + ____ H2O1  Type of Rxn:____________________



4) ____ Al  + ___O2 ==> ____ Al2O3  Type of Rxn:____________________




5) ____ Au2S3  + ____H2 ==> ____Au  + ____H2S1  Type of Rxn:____________________




2020-2021 Review HW for Balancing Types Predict & Energy Change of Chem Rxn
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Part II
For the following reactants, please provide the following
a. For single replacement reaction

b. For double replacement reactions (only for solid formation)

1. Na2(SO4)1 (aq) + K1(NO3)1 (aq) -->











2. K2(CO3) 1 (aq) + Ba1Cl2 (aq) --->











3.Ba(s) + Al2(SO4)3 (aq) -->













2020-2021 Review HW for Balancing Types Predict & Energy Change of Chem Rxn
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Part III

Answer the following question in clear and concise manner (using appropriate word from the learned material)

1) ______________ is the state that exists for a brief moment (a billionth of second) before the particles rearrange into the products?

2) Potential energy of the reactant (PEr) is _________ compared to the potential energy of the product (PEp) in an Exothermic rxn.

3) The difference between the potential energy of product and the potential energy of reactant is called _____________

4) An endothermic reaction _____________ (release or absorb) energy to/from its surrounding (surrounding is everything except the reaction material).

5) ___________ is the minimum amount of energy for a set of reactants to form a set of products.

6)"+ΔH" is an indicator of an Exothermic or Endothermic reaction?


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