when sulfuric acid and barium hydroxide were mixed, the light should have gone out, why??

Question

how do i write the reaction equation?

and why does the light go out, i dont really understand can you help me.

Answer 1

Because the solution is no longer conductive - it's just water:

H2SO4(aq) + Ba(OH)2(aq) --> BaSO4(s) + 2HO2(l)

the BaSO4(s) can't conduct the electricity since it's insoluble and sitting at the bottom of the reaction vessel.

Answer 2

Barium Hydroxide And Sulfuric Acid

Answer 3

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RE:
when sulfuric acid and barium hydroxide were mixed, the light should have gone out, why??
how do i write the reaction equation?

and why does the light go out, i dont really understand can you help me.

Answer 4

jen27,

You should explain in more detail what your experiment was, but I presume that you were using some kind of light bulb based conductance meter to measure the conductance of a solution. When the light is on, it means the solution is conducting electricity. When it's off, the solution is not conducting.

Sulfuric acid, H2SO4, is an acid, and barium hydroxide, Ba(OH)2, is a base. When you mix the two, a neutralization reaction occurs that forms water and a salt. The equation is:

H2SO4 (aq) + Ba(OH)2 (aq) ----> 2H2O (l) + BaSO4 (s)

The "aq" means "aqueous" (meaning that the substance consists of ions dissolved in solution), the "l" meand "liquid", and the "s" means "solid". Now, conducting electricity requires the movement of charged particles. Before they are mixed, we have aqueous substances that consist of charged particles floating around the solution. These charged ions can move around and conduct positive and negative charge to different electrodes on your meter.

However, once they are mixed and the reaction occurs, you get water (a neutral molecule) and barium sulfate (an INSOLUBLE, neutral solid). Neither of these are capable of moving charges around a solution. Thus, you have lost all the ions that were conducting electricity, the conductance of the solution falls to zero, and the lightbulb on your meter goes out.

Answer 5

Ba(OH)2(aq) + H2SO4(aq) ===> BaSO4(s) + 2H2O

Before mixing, there were ions in the solution that conducted electricity. After mixing, there was only insoluble BaSO4and water, neither of which conduct electricity.

Answer 6

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H2SO4(aq) + Ba(OH)2(aq) --> BaSO4(s) + 2HOH(l) The acid and base neutralize and produce insoluble barium sulfate and undissociated water molecules.

Answer 7

H2SO4 (aq)+ Ba(OH)2 (aq)>> BaSO4 (s)+ 2 H2O (l)

net ionic
SO42- + Ba2+ >> BaSO4 (s)