What are the net ionic equations for these reactions?

[Zachalmighty]

Homework Statement

1) You mix a 45.0 mL solution of 0.250 M Al(NO3)3* with a 30.0 mL solution of 0.600 M K2C)3. (a) Give the net ionic equation. (b) How many grams of the precipitate forms? (c) After the reaction, what is the concentration of the excess ions?

*All of the numbers in the listed molecules are subscripts.

2. Give the formula equation, the complete ionic equation, and the net ionic equation of the reaction in water between hydroiodic acid and CH3NH2*.

*the numbers here are subscript as well.

Homework Equations

The Attempt at a Solution

a) Al(NO3)3 + K2CO3 ----> AlK2 + NO3 ?

 

[Borek]

Well, if you know that you are assumed to use solubility rules, I suppose you may check them in your textbook. You may also try to google them:

http://www.google.com/search?q=solubility+rules

In the second reaction there will be no precipitate, this is acid base reaction.

 

[Zachalmighty]

Is it safe to assume that when it says dissociates it means that a compound like NO₃would turn into N and 0₃ or does it simply mean that it breaks with whatever else it is bonded to as the complete compound NO₃?

By concentration of the remaining Ions it means whether they are negative or positively charged, right?

 

[Borek]

Is it safe to assume that when it says dissociates it means that a compound like NO₃would turn into N and 0₃ or does it simply mean that it breaks with whatever else it is bonded to as the complete compound NO₃?

Dissociates into Al³⁺ and NO₃^-.

By concentration of the remaining Ions it means whether they are negative or positively charged, right?

No, concentration is amount per volume, charge doesn't matter. For example you may have solution that contains 0.1M (mol/L) Na⁺.

This is just a limiting reagent question.

 

[Zachalmighty]

Dissociates into Al³⁺ and NO₃^-.



No, concentration is amount per volume, charge doesn't matter. For example you may have solution that contains 0.1M (mol/L) Na⁺.

This is just a limiting reagent question.

Ah, ok. So by concentration they mean Molarity! I should have noticed that. Thank you.