Answer:
LiBr + AgNO₃ → AgBr ↓ + LiNO₃
Option E.
Explanation:
We determine our reactants, and we analyse if there is a precipitated formed.
A. NH₄CH₃COO + AgNO₃ → AgCH₃COO + NH₄NO₃
No reaction.
Salts from acetate are slightly soluble, all the salts from nitrate are soluble
B. 2LiCl + H₂SO₄ → 2HCl + Li₂SO₄
No reaction. Sulfates can only make precipitate with Ca²⁺, Ba²⁺, Mg²⁺, Ag⁺ and Pb²⁺
C. 2NaCl + K₂SO₄ → 2KCl + Na₂SO₄
Same explanation as before. Salts from halides (Cl⁻, Br⁻, I⁻, F⁻) are mostly soluble but we have exceptions.
D. 2NaBr + Li₂CO₃ → Na₂CO₃ + 2LiBr
Salts from carbaonate and group 1 are soluble. The others elements make precipitates with carbonates.
E. Salt from bromide and silver cation is a precipitated. Bromines can also make solid when it is mixed with Hg₂²⁺, Cu⁺, Pb²⁺
E. LiBr + AgNO₃ → AgBr ↓ + LiNO₃
