Answer to Question #136127 in General Chemistry for Javier

Question

How many grams of water are formed from the reaction of 35.0 g NH3?

Answer 1

Balanced equation is

4NH₃ + 5O₂ ------>4NO + 6H₂O

In the above reaction 4 moles of ammonia reacted to produce 6 moles of Water

4molNH₃=6molH₂O

First convert mol ratio into weight ratio

Moles of NH₃ = (wt. of NH_{3 )}/( mol wt of NH3)

4mol = wt of NH₃/ 17g/mol

Wt of NH₃ = 17 gram

Also convert 6 moles of water into gm

Wt of water = 108 gm

According to weight ratio

17 gm ammonia reacted to produce 108 gm water

17gmNH₃ = 108gm H₂0

Gram of water formed from 35gram of NH₃

= (108/17)(35)

=222.35 gram .