This is a Lab summary about the equations and physical attributes concerning Nitrogen Dioxide.

Physical Properties / Observations
- Brown Coloured gas
- Strong Acidic smell
- Flask became warm
- Colour changes in Nitric Acid
Combustable
- NO
Solubility in Water
- Very Soluble
Acidic / Basic
- Acidic
Test for Gas
Litmus Paper

Equations that were aparent during the experiment
Acid + Carbonate -> H2O + Salt + CO2

Equation for the solubility of NO3 into water
NO2(g) + H2O(aq) -> HNO2 OR/+ HNO3
Nitrogen Dioxide + Water -> Nitric Acid

This reaction demostrates how the Nitrogen Dioxide can dissolve into water similarly to CO2 and turn the water acidic (Nitric Acid)

This Equation explains how Nitrogen Dioxide is procurred from Nitric Acid
1) HNO3(aq) + Cu(s) -> CuNO3 + NO2(g) + H2O(aq)
OR
2) HNO3(aq) + Cu(s) -> Cu(NO3)2 + NO2(g) + H2O
Nitric Acid + Copper -> Copper Nitrate (green/blue) + Nitrogen Dioxide + Water

The reaction is an exothermic reaction which explains the fact that the flas starts to heat up as more and more gas is produced. This also creates a reaction where, the production of gas accelerates as a result of the heat.