Topscore chem question

[bugmenotlol]

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On one of the question #47 test 1, it asked me to identify an incorrect response. BTW the answer is e=none of the above.

One of the choice, Reaction II: BACO3(s) + HCL(aq)___>(write the complete equation out) which is: h20 + Co2 +Bacl2. I have no idea how to do this.
And... then they wrote A NET IONIC Equation that is BACo3(S) + 2H+(aq) __>h20 + co2 + BA2+(aq)
What happen to the HCL?
Sorry, i haven't taken gen chem in a long time. This is my weakest subject. Please explain this.

Even more confusing is the Reaction III: NaF(Aq) + Ba(No3)2(Aq) __>

2F + Ba2+__>BaF2.

What happen to the NA and NO3? I am totally confused. Any help would be appreciated. Thx!

 

[isuclones85]

in Reaction III i believe that is a metathesis(exchange) reaction. The Na would couple with the NO3 and since your post is about net ionic equations (I think...the post isnt too clear in some spots) the NaNO3 would not be included as it is soluble..making Na+ and NO3- the spectator ions. You do not include the spec. ions in the net ionic equation.

dont know if that answered ur question or not but i hoped it helped a little

 

[bugmenotlol]

in Reaction III i believe that is a metathesis(exchange) reaction. The Na would couple with the NO3 and since your post is about net ionic equations (I think...the post isnt too clear in some spots) the NaNO3 would not be included as it is soluble..making Na+ and NO3- the spectator ions. You do not include the spec. ions in the net ionic equation.

dont know if that answered ur question or not but i hoped it helped a little

it did. I just review inonic equation and everything reclicked. Can you help me with reaction II? Apparently, it a gas forming equation=why?