Will you please tell me if these are right? Write the symbol of the caton or anion that give(s) the following reaction:?
1. Forms a precipite with AgNO3 that does not dissolve in HNO3
2. Forms a gas with HCl
3. Give a bright, yellow-orange flame test
4. Forms a precipitate with BaCl2 that does not dissolve in HNO3
1) CL-
2) Mg+
3) Na+
4) SO4--
all correct.
To determine the symbols of the cation or anion that give the mentioned reactions, we need to consider the properties of the compounds involved in each reaction.
1. Forms a precipitate with AgNO3 that does not dissolve in HNO3:
This indicates the presence of a chloride ion (Cl-) because silver chloride (AgCl) is insoluble in nitric acid (HNO3).
2. Forms a gas with HCl:
In this case, the compound must contain a metal or nonmetal that reacts with hydrochloric acid (HCl) to produce a gas. One possible example is magnesium (Mg) which reacts with HCl to form hydrogen gas (H2).
3. Gives a bright, yellow-orange flame test:
A bright, yellow-orange flame test typically indicates the presence of sodium (Na+) ions. When sodium compounds are heated, they emit a characteristic yellow-orange color.
4. Forms a precipitate with BaCl2 that does not dissolve in HNO3:
In this reaction, the compound involved contains sulfate ions (SO4^2-). Barium sulfate (BaSO4) is insoluble in nitric acid (HNO3) and forms a precipitate.
So, the correct symbols for each reaction are:
1. Cl-
2. Mg+
3. Na+
4. SO4^2-