Aluminum chloride is named as if it is ionic but it is really molecular, with the formula Al2Cl6. It can be formed by direct reaction of the elements. 2Al(s) + 3Cl2(g) → AICIA) If 0.824 g of aluminum react with excess chlorine, how many grams of aluminum chloride can be obtained? (4.07 g) Calculate the grams of chlorine that react with 0.194 g of aluminum. (0.765 g) 1.2.b

Respuesta :

Answer:

1) 4.0744 grams of aluminum chloride can be obtained.

2) 0.7652 grams of chlorine that react with 0.194 g of aluminum.

Explanation:

[tex] 2Al(s) + 3Cl_2(g)\rightarrow 2AICI_3[/tex]

1) Moles of aluminum  : [tex]\frac{0.824 g}{27 g/mol}=0.03052 mol[/tex]

According to reaction, 2 moles of aluminum gives 2 moles of aluminium chloride.

Then 0.03052 mol of aluminum will give with :

[tex]\frac{2}{2}\times 0.03052 mol=0.03052 mol[/tex] of aluminium chloride.

Mass of 0.03052 moles of aluminium chloride :

[tex]0.03052 mol\times 133.5 g/mol=4.0744 g[/tex]

4.0744 grams of aluminum chloride can be obtained.

2) Moles of Aluminium : [tex]\frac{0.194 g}{27 g/mol}=0.007185 mol[/tex]

According to reaction, 2  moles of aluminum reacts with 3 moles of chlorine gas.

Then 0.007185 mol of aluminum will react with:

[tex]\frac{3}{2}\times 0.007185 mol=0.01077 mol[/tex] of chlorine gas.

Mass of 0.01077 mol  moles of chlorine gas:

[tex]0.01077 mol\times 71 g/mol=0.7652 g[/tex]

0.7652 grams of chlorine that react with 0.194 g of aluminum.