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 remaining material in the test tube has a mass of 1.27 g. What is the total mass of ammonia and water vapor produced? ___ g
Answers
Answer:
When heated, calcium and hydroxide and ammonium chloride reactto produce ammonia gas, water vapor, and solid calcium chloride.Suppose 5.00g of calcium hydroxide and 10.00g of ammonia chlorideare mixed in a test tube and heated until no more ammonia is givenoff. The remaining material in the test tube has a mass of 10.27g.What total mass of ammonia and water vapor was produced in thereaction?
Explanation:
<p>First consider the reaction equation:<br />CaOH +2NH4Cl --> CaCl2 + 2H20 + 2NH3</p>
<p>Given the total mass of the CaCl2 product, we cancalculate the number of moles;</p>
<p>10.27g CaCl2 / molar mass of CaCl2 (40.078 + 2*35.45) =.09254 moles CaCl2 produced</p>
<p>From this number, we can use the stoichiometry of thebeginning equation to calculate the number of moles of H2O and NH3produced;</p>
<p>.09254*2=.1851 moles NH3 produced * molar mass of NH3 =3.152g</p>
<p>.09254*2=.1851 moles H2O produced * molar mass of H2O =3.335g</p>
<p>So add the mass of the NH3 and H2O produced together toget a final mass of 6.487g. Using significant figures, the correctanswer is 6.49g</p>
<p> </p>
<p>Note** Be very careful in your phrasing of this questionand how you refer to your products. There is no such thing as"hydroxide," rather it has to exist as a pair with something else,calcium hydroxide. It would be impossible to just add hydroxide tosomething.</p>
Answer:
13.73 g
Explanation:
Had this exact same question on a test and the teacher worked it out while explaining. Saying that, "The answer is 13.73 g."