Question

when heated, calcium hydroxide and ammonium chloride react to produce ammonia gas, water vapor, and solid calcium chloride. suppose 5.00g of calcium hydroxide and 10.00g of ammonium chloride are mixed in a test tube and heated until no more ammonia is given off. the resulting calcium chloride in the test tube has a mass of 1.27 g. what is the total mass of ammonia and water vapor produced? ____ g

Explanation:

Step1: Apply the law of conservation of mass

According to the law of conservation of mass, the total mass of reactants equals the total mass of products.
The mass of reactants is \(m_{reactants}=5.00\space g + 10.00\space g=15.00\space g\)
The mass of products is \(m_{products}=m_{CaCl_2}+m_{NH_3 + H_2O}\)

Step2: Calculate the mass of \(NH_3\) and \(H_2O\)

We know \(m_{reactants}=m_{products}\)
So \(m_{NH_3 + H_2O}=m_{reactants}-m_{CaCl_2}\)
Substitute the values: \(m_{NH_3 + H_2O}=15.00\space g- 1.27\space g = 13.73\space g\)

Answer:

13.73