What m is the molar mass of the compound silver chloride?
The Correct Answer and Explanation is:
The molar mass of silver chloride (AgCl) is approximately 143.32 g/mol. This value is calculated by adding the molar masses of its constituent elements, silver (Ag) and chlorine (Cl).
Calculation of Molar Mass:
- Molar Mass of Silver (Ag):
- The atomic mass of silver is approximately 107.87 g/mol. This value is derived from the periodic table and reflects the weighted average of the isotopes of silver found in nature.
- Molar Mass of Chlorine (Cl):
- The atomic mass of chlorine is about 35.45 g/mol. Chlorine exists primarily as two isotopes: Cl-35 and Cl-37, with Cl-35 being the more abundant isotope. The molar mass accounts for this isotopic distribution.
- Adding the Molar Masses:
- To find the molar mass of silver chloride, we sum the molar masses of silver and chlorine:
[
\text{Molar Mass of AgCl} = \text{Molar Mass of Ag} + \text{Molar Mass of Cl}
]
[
\text{Molar Mass of AgCl} = 107.87 \, \text{g/mol} + 35.45 \, \text{g/mol} = 143.32 \, \text{g/mol}
]
Importance of Molar Mass:
The molar mass is crucial in chemistry for several reasons:
- Stoichiometry: It allows chemists to convert between grams and moles when performing calculations in chemical reactions. Knowing the molar mass of silver chloride enables accurate preparation of solutions and mixtures in laboratories.
- Quantitative Analysis: In quantitative analysis, determining the concentration of silver ions in a solution involves using molar mass to convert between the mass of silver chloride and the number of moles present.
- Reactions and Precipitation: Silver chloride is used in various applications, including photography and as a precursor in the synthesis of other silver compounds. Understanding its molar mass helps predict how it will react in different chemical scenarios.
In summary, the molar mass of silver chloride (143.32 g/mol) is calculated by summing the atomic masses of silver and chlorine, which plays a critical role in various chemical applications and calculations.