27-01-2017
Chemistry

Answered

Rank the four gases (air, exhaled air, gas produced from the decomposition of H2O2, gas from decomposition of NaHCO3) in order of decreasing concentration of oxygen).

Verified Answer :

BridgewaterSD BridgewaterSD

27-01-2017

air = 70 % N2
exhaled air =70%N2 + some less O2 compared to only air
2H2O2=2H2O+O2
NaHCO3=2NaHCO3 → Na2CO3 + H2O + CO2 = No O2 gas from decomposition

ssoooo NaHCO3 <exhaled air <air <H2O2

SO sorry for the long wait, hope I helped.

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