How many grams of zinc chloride will be produced from 55. grams of zinc assuming hydrochloric acid is available in excess

Mass = 114.5 g

Explanation:

Given data:

Mass of zinc = 55 g

Mass of ZnCl₂ produced = ?

Solution:

Chemical equation:

Zn + 2HCl     →      ZnCl₂ + H₂

Number of moles of Zn:

Number of moles = mass/molar mass

Molar mass of Zn = 65.4 g/mol

Number of moles = 55 g/  65.4 g/mol

Number of moles = 0.84 mol

Now we will compare the moles of Zn and zinc chloride,

               Zn           :          ZnCl₂

                1             :           1

              0.84        :          0.84

Mass of ZnCl₂:

Mass = number of moles × molar mass

Molar mass of ZnCl₂= 136.3 g/mol

Mass =  0.84 mol × 136.3 g/mol

Mass = 114.5 g

b.

the accuracy of the data.

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