Question
Sodium chlorate, $\mathrm{NaClO}_{3},$ decomposes when heated to yield sodium chloride and oxygen, a reaction used to provide oxygen for the emergency breathing masks in many airliners. Balance the equation.
Step 1
Sodium chlorate decomposes when heated to yield sodium chloride and oxygen. This can be represented as: \[ \mathrm{NaClO}_{3} \stackrel{\mathrm{\Delta}}{\longrightarrow} \mathrm{NaCl}+\mathrm{O}_{2} \] Show more…
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Sodium chlorate, NaClO3 , decomposes when heated to yield sodium chlo-ride and oxygen, a reaction used to provide oxygen for the emergency breathing masks in many airliners. Balance the equation.
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At elevated temperatures, sodium chlorate decomposes to produce sodium chloride and oxygen gas. A 0.8765-g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen gas collected over water occupied 57.2 $\mathrm{mL}$ at a temperature of $22^{\circ} \mathrm{C}$ and a pressure of 734 torr. Calculate the mass percent of $\mathrm{NaClO}_{3}$ in the original sample. (At $22^{\circ} \mathrm{C}$ the vapor pressure of water is 19.8 torr.)
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