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

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Part I: Balance the chemical reaction and give the correct type of reaction for the following: 
 
1) ___ Ca1Br2 + ____ Na3P1 ==> ____ Ca3P2 + ____ Na1Br1&nbsp;&nbsp;Type of Rxn:____________________ 
 
 
 
2) ___ Li3P1O4 ==> ____ Li + ____P + ____ O2&nbsp;&nbsp;Type of Rxn:____________________ 
 
 
 
3) ___ C8H18 + ____ O2 ==> ____ C1O2 + ____ H2O1&nbsp;&nbsp;Type of Rxn:____________________ 
 
 
 
4) ____ Al&nbsp;&nbsp;+ ___O2 ==> ____ Al2O3&nbsp;&nbsp;Type of Rxn:____________________ 
 
 
 
5) ____ Au2S3&nbsp;&nbsp;+ ____H2 ==> ____Au&nbsp;&nbsp;+ ____H2S1&nbsp;&nbsp;Type of Rxn:____________________ 
 
 

 
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Part II 
For the following reactants, please provide the following 
a. For single replacement reaction 
*If the reaction does not occur, please give a one sentence explanation of why it does not.
*If the reaction does occur, please give a balanced complete chemical reaction including phases of reactants and products. Then show all work to determine the net ionic reaction.
 
b. For double replacement reactions (only for solid formation) 
*If the reaction does not occur, determine the potential products and phases and show all work to get the net ionic reaction to show that the reaction does not occur (i.e. everything crosses out because all species are spectator ions).
*If the reaction does occur, please give a balanced complete chemical reaction including phases of reactants and products. Then show all work to determine the net ionic reaction.

1. Na2(SO4)1 (aq) + K1(NO3)1 (aq) --> 
 
 
 
 
 
 
 
 
 
 
 
2. K2(CO3) 1 (aq) + Ba1Cl2 (aq) ---> 
 
 
 
 
 
 
 
 
 
 
 
3.Ba(s) + Al2(<nowiki>SO</nowiki>4)3 (aq) --> 
 
 
 
 
 
 
 
 
 
 
 

 
 
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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)"+&#916;H" is an indicator of an Exothermic or Endothermic reaction?

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