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How many grams of NaCl must react to produce 1.00 g Cl_2?

Question:

How many grams of NaCl must react to produce 1.00 g {eq}Cl_2 {/eq}?

Mass to Mass conversion:

According to the law of constant proportion,a molecule is made up of a group of atoms of the same or different types, combined together in a fixed proportion by mass. Therefore, there exists a stoichiometric relationship between the number of different constituent atoms in the molecule.

Answer and Explanation:

1 molecule of NaCl has 1 atom of chlorine but 1 molecule of {eq}Cl_{2} {/eq} has 2 atoms of chlorine.

or, the Molar ratio of Chlorine atoms in NaCl and {eq}Cl_{2} {/eq}=1:2

Given: Moles of {eq}Cl_{2} {/eq}=1.00g/molar massl=1.00g/(71.0g/mol)=0.0140 mol

So, moles of Cl atoms={eq}2\times0.0140 {/eq}=0.0282 mol

So, moles of NaCl required to produce 0.0282 mol of Cl atoms =0.0282 mol

Thus, the mass of NaCl required to produce 0.0282 mol of Cl atoms={eq}0.0282 mol \times (58.4g/mol)=1.64 g {/eq}

Answer:1.64 g


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What is Molar Mass? - Definition, Formula & Examples

from General Studies Science: Help & Review

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