13. Which statement about trace elements in our atmosphere is false?

Classify each of these reactions. Ba(ClO3)2(s)⟶BaCl2(s) 3O2(g)Ba(ClO3)2(s)⟶BaCl2(s) 3O2(g) acid–base neutralization precipitatio

MrRissso [65]

<u>Answer:</u>

1- Ba(ClO3)2(s) ----> BaCl2(s) +3O2(g) -Redox

2- 2NaCl(aq) +K2S(aq) ----> Na2S(aq) + 2KCl(aq) - None of the above

3- CaO(s) + CO2(g) ------> CaCO3(s) -None of the above

4- KOH(aq)+ AgNO3(aq) -----> KNO3(aq) + AgOH(s) - Precipitation

5- Ba(OH)2(aq) + 2HNO2(aq) -----> Ba(NO2)2(aq) +2H2O(l) -Neutralization.

<u>Explanation;</u>

1) Redox, because it involves bith reduction and oxidation

2) I suppose would be "none of the above" for this chemical reaction, from the choices given.

3) It is a synthesis reaction, thus the correct answer should be "none of the above" from the asker's choices.

4) It is a precipitation reaction, also called double decomposition reaction where two soluble salts react to form an insoluble salt and a soluble salt.

5) It is acid-base neutralization, as such reactions form both a salt and water.

6 0

3 years ago

Use the periodic table, to determine which element the following spin diagram represents

noname [10]

The answer is A chlorine

8 0

3 years ago

What's ionic bonding

stich3 [128]

Ionic bonding is bonding between a metal and a nonmetal, in short. For example, NaCl (table salt, Sodium Chloride) is an ionic bond. This is because Sodium is a metal while Chlorine is a nonmetal, making this an ionic bond. Hope this helps and have a great day!

8 0

4 years ago

g When copper(II) chloride and sodium carbonate solutions are combined, solid copper(II) carbonate precipitates, leaving a solut

Elden [556K]

Answer:

When copper(II) chloride and sodium carbonate solutions are combined, solid copper(II) carbonate precipitates, leaving a solution of sodium chloride. Write the conventional equation, total ionic equation, and net ionic equation for this reaction.

Explanation:

The word equation for the reaction is:

Copper (II) chloride(aq) + sodium carbonate (aq) ->sodium chloride (aq) + copper carbonate(s)

The balanced chemical equation of the reaction is:

$CuCl_2(aq)+Na_2CO_3(aq)->2NaCl(aq)+CuCO_3(s)$