write a balanced half-reaction for the reduction of nitrate write a balanced hal

Question

write a balanced half-reaction for the reduction of nitrate write a balanced half-reaction for the reduction of nitrate write a balanced half-reaction for the reduction of nitrate Knowledge Check Question 3 Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a preciptate will form, enter its emp formula in the last column solution B pecipitate fom mpirical are mixed? precipitate . |when A-nd, precipitate zinc acetate coppertII) nitrate potassium side MacBook Air 3 Q W E ol option command command

Explanation / Answer

define:

Solubility rules:

- Most alkali metal (group I metals) are always soluble

- Cations/Anions such as NH4+, HCO3-; ClO3-, NO3- are always soluble

- Most halides are soluble, F-,Cl-,Br-,I-, exceptions = Ag+, Hg2+2, Pb+2 compounds

- Most sulfates are soluble (SO4-2); exceptions = Ag+, Ca+2, Sr+2, Ba+2, Hg2+2, Pb+2 compounds

- In general (except all alkali metals) these ions will NOT be soluble: PO4-3, CrO4-2, S-2, CO3-2

then

Q1.

No precipitate will form, all remains in solution

Q2

Copper ions + Sulfide = CuS forms

KNO3 remains in solution

CuS

Q3

Pb+2 and Cl- ions form PbCl2

KNO3 remains in solution

empirical= PbCl2

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