Aluminum And Silver Sulfide
Background of reaction by Chu C. 1st Period
All about Aluminum
Atomic Number: 13
Atomic Weight: 26.9815386
Melting Point: 933.437 K (660.323°C or 1220.581°F)
Boiling Point: 2792 K (2519°C or 4566°F)
Density: 2.70 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 3 Group Number: 13 Group Name: none
Although aluminum is the most abundant metal in the earth's crust, it is never found free in nature. All of the earth's aluminum has combined with other elements to form compounds. Two of the most common compounds are alum, such as potassium aluminum sulfate (KAl(SO4)2·12H2O), and aluminum oxide (Al2O3). About 8.2% of the earth's crust is composed of aluminum.
Silver Sulfide
Silver sulfide is insoluble in all solvents, but is degraded by strong acids. Silver sulfide features a covalent bond, as it is made up of silver and sulfur. It is a component of classical qualitative inorganic analysis.
Properties
Chemical formula: Ag2S
Molar mass: 247.80 g
Appearance: Grayish-black crystal
Odor: Odorless
Melting point: 836 °C
Solubility: Soluble in aq. HCN, aq. citric acid with KNO3 Insoluble in acids, alkalies, aqueous ammoniums
Solving Stoichiometry Problem, this is how you solve this reaction step by step
Aluminum and Silver Sulfide
Single Replacement
2nd Step: Balanced Equation
2Al + 3Ag₂S → Al₂S₃ + 6Ag
Aluminum + Silver Sulfide → Aluminum Sulfide + Silver
4th step: Name the molar mass for each reactant and product
Al: 26.982 g/mole + Ag₂S: 107.868*2+32.066=247.802 g/mole → Al₂S₃: 26.982*2+32.066*3=150.162 g/mole + Ag: 107.868 g/mole
Mole to mole conversions
Mass to mass conversions
Limiting and excess reactant
https://docs.google.com/presentation/d/19BbcDpOBW2qFZgLCFPte_hYiwqBWrBCzBw_7s8-fNVE/edit?usp=sharing
6th step: Mass to mass conversions
7th step: Limiting and excess reactant
8th step: Theoretical yield
9th step: Percent yield
All work is in the link !!!