NH4ClO4 reacts with itself to produce nitrogen, chlorine, oxygen, water, and energy. What mass of water is produced by the reaction of 7.64 g of NH4ClO4? Round your answer to significant digits.

Answer 1

NH4CLO4 ----> N2 + Cl2 + O2 + H2O

Step 1 balance the equation

2NH4CLO4 ----> N2 + Cl2 + O2 + 2H2O

Step 2 convert all values to moles

7.64 g multiplied by 1 mole/117.485 g This cancels out the grams leaving moles = 0.065 moles

step 3 use the molar ratio to find the moles of water produced

0.0650 moles of NH4CLO4 X 2 moles of H2O

_____________ =0.0650 moles of H2O

2 moles of NH4CLO4

step 4 convert the moles of H2O back to grams

0.0650 moles of H2O X 18.015 g H2O

------------------ = 1.17 g of H2O to three sig figs

mole of H2O