. In which of the following reactions do five total molecules of reactants produce four total molecules of products? (Points : 3) N2 + 3H2 2NH3 SnO2 + 2H2 Sn + 2H2O 2H2S + 3O2 2SO2 + 2H2O 2SO2 + O2 2SO3

N2 + 3H2 -> 2NH3 has 4 molecules of reactants because it has 1 Nitrogen molecule and 3 Hydrogen molecules. It also has 2 molecules of products because it has 2 ammonia molecules

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RomeliaThurston RomeliaThurston · Answer 2 · 2019-01-22T06:12:35+01:00

Answer: The correct answer is [tex]2H_2S+3O_2\rightarrow 2SO_2+2H_2O[/tex]

Explanation:

We are asked a reaction in which five molecules of reactants produce 4 molecules of products.

From the given options:

Option 1:

[tex]N_2+3H_2\rightarrow 2NH_3[/tex]

Here, 1 mole of nitrogen is reacting with 3 moles of hydrogen to produce 2 moles of ammonia. In other words, 4 molecules of reactants produce 2 molecules of product.

Option 2:

[tex]SnO_2+2H_2\rightarrow Sn+2H_2O[/tex]

Here, 1 mole of tin oxide reacts with 2 moles of hydrogen to produce 1 mole of tin and 2 moles of water. In other words, 3 molecules of reactants produce 3 molecules of product.

Option 3:

[tex]2H_2S+3O_2\rightarrow 2SO_2+2H_2O[/tex]

Here, 2 moles of hydrogen sulfide reacts with 3 moles of oxygen to produce 2 moles of sulfur dioxide and 2 moles of water. In other words, 5 molecules of reactants produce 4 molecules of product.

Option 4:

[tex]2SO_2+O_2\rightarrow 2SO_3[/tex]

Here, 2 moles of sulfur dioxide reacts with 1 mole of oxygen to produce 2 moles of sulfur trioxide. In other words, 3 molecules of reactants produce 2 molecules of product.

Hence, the correct answer is option 3.