How many moles of calcium chloride will be produced from 22.9 g of hydrochloric acid?

0.314 moles

Explanation:

We are given;

Mass of HCl is 22.9 g

We are required to determine the number of moles of CaCl₂

Assuming the equation for the reaction in question is;

2HCl + Ca(OH)₂→ CaCl₂ + 2H₂O

Step 1: Determine the number of moles of HCl

Moles = Mass ÷ Molar mass

Molar mass = 36.46 g/mol

Moles of HCl = 22.9 g ÷ 36.46 g/mol

                     = 0.628 moles

Step 2:  Determine the number of moles of CaCl₂

From the equation 2 moles of HCl reacts to produce 1 mole of CaCl₂

Thus, moles of CaCl₂ = Moles of HCl ×  1/2

                                   = 0.628 moles × 1/2

                                   = 0.314 moles

Thus, the number of moles of CaCl₂ is 0.314 moles

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Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.