Respuesta :
Answer:
0.04821 mol CaCl₂
Explanation:
Ca(OH)₂ + 2 HCl ⇒ CaCl₂ + H₂O
This is your reaction.
We need the chemical equation to know the stoichiometry (the numbers that in front of the compounds). Since we are converting from Ca(OH)₂ to CaCl₂, you only need to focus on these compounds. There are no numbers in front of Ca(OH)₂ and CaCl₂, so the ratio of the compounds is 1:1.
Now, convert grams of Ca(OH)₂ to moles of Ca(OH)₂. The molar mass is 74.09 g/mol.
[tex]3.572 g*\frac{mol}{74.09g} =0.04821 mol[/tex]
Using moles of Ca(OH)₂ and the ratio from the stoichiometry, convert moles of Ca(OH)₂ to moles of CaCl₂. Since the ratio is 1:1, the moles will be equal.
[tex]0.04821mol*\frac{1mol}{1mol} =0.04821mol[/tex]
You will produce 0.04821 moles of CaCl₂.
0.04821 mol CaCl₂ will be produced from 3.572 g of [tex]Ca(OH)_2[/tex] reacting with HCl.
Reaction:-
Ca(OH)₂ + 2 HCl ⇒ CaCl₂ + H₂O
The ratio of the compounds is 1:1 because we are converting from Ca(OH)₂ to CaCl₂. There are no numbers in front of Ca(OH)₂ and CaCl₂ because we are converting from Ca(OH)₂ to CaCl₂.
Now, convert grams of Ca(OH)₂ to moles of Ca(OH)₂. The molar mass of Ca(OH)₂ is 74.09 g/mol.
[tex]Number\ of \ moles=\frac{Mass}{Molar\ mass}[/tex]
[tex]\frac{3.572\ g}{74.093\ g/mol} \\=0.0482\ mol[/tex]
Hence, the 0.0482 moles of CaCl₂ will be produced.
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