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posted by  MzKlassy on 11/16/2008 3:20:28 AM  |  status: Live  

Part II please correct if needed, oxidation numbers and naming naming reactions and reducing etc. will award 10 pts for quality assistance +4

Course Textbook Chapter Problem
General Chemistry N/A N/A N/A
Question Details:
 

Read Carefully: Predict the products, identify the type of reaction (double replacement, acid/base,single replacement, combustion, combination, decomposition), and balance. If it is a type of double replacement reaction also include the total ionic and net ionic equations. If it is a type of redox reaction identify the element that is oxidized and the element that is reduced. Also identify the oxidizing and reducing agents.

 

6) Ca(NO3)2(aq) + LiOH(aq) -----> CaOH2(aq) + 2 LiNO3 (aq) 
NR 
Double Replacement 

7) K2CO3(aq) + HCl(aq) ---àCaOH2(aq) + 2LiNO3 (aq)

2K2 (aq) + 2CO3 (aq) + 2H(aq) + 2Cl(aq) à 2K2(aq) + 2Cl(aq) + 2HCO3 (s)

2CO3(aq) + 2H(aq)-à2HCO3(s)

Double Displacement

Identify the oxidation numbers on each of the elements in the following compounds

8) H3PO4

H:+1

P:+5

O:-2(4)

9) Ca(NO3)2

Ca:+2

N:+5

O:-2

10) CaCO3

Ca:+2

C:+4

O:-2(3)
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Oracle
Karma Points: 15,945
posted by CHEMNATION! on 11/16/2008 7:21:30 AM  |  status: Live
Asker's Rating: Lifesaver   
MzKlassy's comment:
"thank you for your assistance, what is the true answer for #7 i can't make it out with all of the green and red, i don't know which is which, thank you"
Response Details:
 
I am just checking your input

6) Ca(NO3)2(aq) + 2LiOH(aq) -----> CaOH2(aq) + 2 LiNO3 (aq) 
NR 
Double Replacement 

7) K2CO3(aq) + HCl(aq) ---àCaOH2(aq) + 2LiNO3 (aq)

2K+2 (aq) + 2CO32- (aq) + 2H+(aq) + 2Cl-(aq) ---> 2K+ 2(aq) + 2Cl-(aq) + 2HCO3 (s)+ H2O(l) + CO2(g)

2CO3(aq) + 2H(aq)-à2HCO3(s)

2K+(aq) + CO32- (aq) + 2H+(aq) + 2Cl-(aq) ---> 2K+ (aq) + 2Cl-(aq) + + H2O(l) + CO2(g)

CO32- (aq) + 2H+(aq)  --->  H2O(l) + CO2(g)


Double Displacement and gas forming

Identify the oxidation numbers on each of the elements in the following compounds

8) H3PO4

H:+1

P:+5

O:-2(4)

9) Ca(NO3)2

Ca:+2

N:+5

O:-2

10) CaCO3

Ca:+2

C:+4

O:-2(3)
Spending precious time on a problem that results in a rating of "not helpful" or "somewhat helpful" is deemed a wasted effort. With certainty, I'll be sure not to provide assistance in that direction again.
 
PROBLEMS WITH CHEMICAL FORMULAS WILL BE ANSWERED FASTER IF PROPER CRAMSTER TOOLBAR FORMATS ARE USED.
 
Oracle
Karma Points: 15,945
posted by CHEMNATION! on 11/17/2008 12:54:32 AM  |  status: Live
Asker's Rating: Helpful   
MzKlassy's comment:
"thats whhat i had when i fixed it thank you"
Response Details:
7) I am not sure from your post which equation you really want in #7, so here's all three:

Balanced Molecular Equation:
K2CO3(aq) + HCl(aq) ---> 2KCl(aq) + H2O(l) + CO2(g)
 
Total Ionic equation:
2K+(aq) + CO32- (aq) + 2H+(aq) + 2Cl-(aq) ---> 2K+ (aq) + 2Cl-(aq) + H2O(l) + CO2(g)
 
Net Ionic Equation:
CO32- (aq) + 2H+(aq)  --->  H2O(l) + CO2(g)
Spending precious time on a problem that results in a rating of "not helpful" or "somewhat helpful" is deemed a wasted effort. With certainty, I'll be sure not to provide assistance in that direction again.
 
PROBLEMS WITH CHEMICAL FORMULAS WILL BE ANSWERED FASTER IF PROPER CRAMSTER TOOLBAR FORMATS ARE USED.
 
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