Answer to Question #289303 in General Chemistry for matia

Question

Molar Mass Al = 26.98 grams/mole

Molar Mass HCl = 36.46 grams/mole

Molar Mass AlCl₃ = 133.33 grams/mole

Molar Mass H₂ = 2.02 grams/mole

 

How many grams of AlCl₃ will be made if you fully react 93 grams of HCl?

Step 1: Convert grams of HCl to moles of HCl

Step 2: Convert moles of HCl to moles of AlCl₃

Step 3: Convert moles of AlCl₃ to grams of AlCl₃

Answer 1

2Al(s)+6HCl(aq)→2AlCl3(aq)+3H2(g)

Step1: moles of HCl= (93/36.46)=2.55 moles

Step 2: mole ratio= 6:2= 3:1

2.55÷ 3= 0.85moles

Step 3: grams of AlCl3= 0.85×133.33= 113.33g