TopScore Pro Question!

[cc609]

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Hello! Will someone please help me with this question? 🙁

Identify the INCORRECT statement based on the results of the following reactions:

I: NH3(aq) + HCL -->
II: BaCO3(s) + HCL(aq)-->
III: NaF(aq) + Ba(NO3)2(aq)

A. Rxn I is acid-base reaction
B. The net ionic equation for Reaction III is : 2F-(aq) + Ba(aq)--> BaF2(s)
C. Reaction II is a gas-forming reaction
D. The sum of the coefficients of the balanced ionic equation for Reaction is 6
E. None

The answer is E meaning all the answer choices are correct.
The questions I had...
When writing the net ionic equation, how do you know that BaF2 will be a solid?! And that Reaction 2 is a gas forming reaction?

Thank you 🙂 🙂😀

 

[hope_to_match]

Hello! Will someone please help me with this question? 🙁

Identify the INCORRECT statement based on the results of the following reactions:

I: NH3(aq) + HCL -->
II: BaCO3(s) + HCL(aq)-->
III: NaF(aq) + Ba(NO3)2(aq)

A. Rxn I is acid-base reaction
B. The net ionic equation for Reaction III is : 2F-(aq) + Ba(aq)--> BaF2(s)
C. Reaction II is a gas-forming reaction
D. The sum of the coefficients of the balanced ionic equation for Reaction is 6
E. None

The answer is E meaning all the answer choices are correct.
The questions I had...
When writing the net ionic equation, how do you know that BaF2 will be a solid?! And that Reaction 2 is a gas forming reaction?

Thank you 🙂 🙂😀

..based on the solubility rules: 1) All Group 1 metals, NH4+, NO3-, CLO4-, and acetate salts are soluble 2) most Ag+, Pb2+ and Hg2 ^-2 salts are insoluble

my guess would be that Ba is a group II metal and therefore wouldn't be soluble..

For your other question...rxn 2 is a gas forming reaction because we form H2CO3 which is a gas (when carbon dioxide is dissolved in water this is also produced). This is a very important molecule in biology (i.e. transport of CO2) so maybe you need to review that as well..