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Please help write out and balance the following equation:  Calcium Hydroxide + carbon...

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user3120320 | (Level 1) Salutatorian

Posted January 12, 2013 at 8:50 PM via web

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Please help write out and balance the following equation: 

Calcium Hydroxide + carbon dioxide --> calcium carbonate + water

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ncchemist | eNotes Employee

Posted January 13, 2013 at 2:41 AM (Answer #1)

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You are only allowed to ask one question at a time so I edited down your question accordingly.  You are asking for the following equation to be written out and balanced: calcium hydroxide plus carbon dioxide yields calcium carbonate plus water.  The chemical equation is written in symbol form below:

Ca(OH)2 + CO2 --> CaCO3 + H2O

Calcium is Ca and it forms the +2 cation.  So it will be balanced by 2 hydroxide anions to make calcium hydroxide since they have a -1 charge.  Carbon dioxide is CO2 since that is what its name applies.  For calcium carbonate, again the calcium cation is +2 and the carbonate anion is -2 so they join in a 1:1 molar ratio to make CaCO3.  And water is well known as H2O.  So that is how we come up with the above equation.  We can also see that the above equation is balanced since it has the same number of each element on both sides of the equation: 1 C, 1 Ca, 4 O, and 2 H.  So the complete balanced chemical equation is:

Ca(OH)2 + CO2 --> CaCO3 + H2O

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karnishekhawat | (Level 1) eNoter

Posted January 12, 2013 at 8:55 PM (Answer #2)

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Ca(OH)2 +CO2 --> CaCO3 + H2O

K2CO3 + 2HCl ---> 2KCl + H2O + CO2

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nhl123 | Student, Grade 11 | (Level 1) Valedictorian

Posted January 13, 2013 at 2:18 AM (Answer #3)

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Ca(OH)2 +CO2 --> CaCO3 + H2O

K2CO3 + 2HCl ---> 2KCl + H2O + CO2

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wescarlyon337 | Student, Grade 10 | (Level 1) Salutatorian

Posted January 21, 2013 at 2:46 PM (Answer #4)

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This is the balanced equation:

Ca(OH)2 +CO2 -> CaCO3 + H2O

K2CO3 + 2HCl -> 2KCl + H2O + CO2

Hope this helps

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ibstudent54 | Student, Grade 11 | (Level 1) eNoter

Posted January 27, 2013 at 5:30 AM (Answer #5)

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Ca(OH)2 +CO2 --> CaCO3 + H2O

K2CO3 + 2HCl ---> 2KCl + H2O + CO2

 
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subhaditya18 | Student | (Level 1) Honors

Posted January 30, 2013 at 3:59 PM (Answer #6)

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Ca(OH)2+` ` CO2`->CaCO3+H2O```

 

 

 

 

 

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Jyotsana | Student, Grade 10 | (Level 1) Valedictorian

Posted February 22, 2014 at 1:08 AM (Answer #7)

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Ca(OH)2+CO2=>CaCO3+H20

The equation is balanced already.

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