If you had excess chlorine, how many moles of of aluminum chloride could be produced from 19.0 g of aluminum?

The number of moles of aluminum chloride that could be produced is 0.704 moles

First, we will write a balanced chemical equation for the reaction

The balanced chemical equation for the reaction between aluminum and chlorine is

2Al + 3Cl₂ → 2AlCl₃

This means 2 moles of aluminum (Al) will react with 3 moles of chlorine (Cl₂) to produce 2 moles of aluminum chloride (AlCl₃)

Now, to determine the number of moles of aluminum chloride that could be produced,

We will determine the number of moles of aluminum present in 19.0 g of Al

Using the formula

Mass of aluminum = 19.0 g

Molar mass of aluminum = 26.98 g/mol

∴ Number of moles of aluminum present =

Number of moles of aluminum present = 0.704 moles

Since,

2 moles of aluminum (Al) reacts to produce 2 moles of aluminum chloride (AlCl₃)

Then,

0.704 moles of aluminum (Al) will react to produce 0.704 moles of aluminum chloride (AlCl₃)

Hence, the number of moles of aluminum chloride that could be produced is 0.704 moles

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0.70 moles

Explanation:

As can be seen from the chemical equation, 2 moles of aluminium react with 3 moles of chlorine.

According to mole concept, 1 mole of every substance weighs equal to its molar mass.

Moles of Al =

As aluminium is the limiting reagent as it limits the formation of product and chlorine is the excess reagent as it is left unreacted.

2 moles of aluminium reacts to produce 2 moles of aluminium chloride.

0.70 of aluminium reacts to form = of aluminium chloride.

Thus 0.70 moles of aluminium chloride will be formed.

the product of the pressure and volume is also constant

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.