List all the anions in this lab that are identified using: A. Precipitation B. r

Question

List all the anions in this lab that are identified using:

A. Precipitation

B. redox reactions

c. acid-base reactions

D. gas- forming reactions.

I am given the following anions: SO4^2-, CO3^2-, NO2-, CL-, Br-, I-, and NO3-.

These are the following equations given:
Ca+2(aq) + SO4-2(aq) ?? CaSO4(s) Equation 1 ( these precepitate in the presence of Ca^+2)
Ca+2(aq) + CO3-2(aq) ?? CaCO3(s) Equation 2

CaCO3(s) + 2H+(aq) ?? Ca+2(aq) + CO2(g) + H2O(l) Equation 3
CaSO4(s) + H+(aq) ?? No Reaction (precipitate remains) Equation 4

2NO2-(aq) ?? NO(aq) + NO3-(aq) Equation 5
2NO(g) (colorless) + O2(g) ?? 2NO2 (g) (red-brown) Equation 6 (forms red-brown nitrogen dioxide gas and nitrite ion)

Ag+(aq) + Cl-(aq) ?? AgCl(s) Equation 7
Ag+(aq) + Br-(aq) ?? AgBr(s) Equation 8 (these also precipitate)
Ag+(aq) + I-(aq) ?? AgI(s) Equation 9

Cl2(aq) (colorless) + Cl- (aq) (colorless) ?? No Reaction Equation 10
Cl2(aq) (colorless) + Br-(aq) (colorless) ?? Br2(aq) (yellow to brown ) + Cl-(aq)(colorless) Equation 11
Cl2(aq) (colorless) + I- (aq) (colorless) ?? I2(aq) (yellow to brown) + Cl-(aq)(colorless) Equation 12

NO3-(aq) + 4H+(aq) + 3Fe2+(aq) ?? NO(aq) + 3Fe3+(aq) + 2H2O(l) Equation 13
2NO(g) (colorless) + O2(g) ?? 2NO2(g) (red-brown) Equation 14 ( does not precepitate or form gaseous products from an acid enviroment)

Explanation / Answer

SO4^2- => option(A) CO3^2- => option(D) NO2- => option(D) and (B) Cl-, Br-, I- => option (A) NO3- => option(B)

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.