Which one of the following is incorrect at room temperature?
a.Water is liquid at 1 atmosphere
b.ozone is gas at 1
Atmosphere
c.O4 EXISTS AT VERY HIGH PRESSURE
d.CH4 IS LIQUID AT LOW PRESSURE
d. Methane (CH4) is a gas at room temperature, unless the pressure is extremely high.
To determine which statement is incorrect, we need to understand the properties of the substances mentioned at room temperature and 1 atmosphere of pressure.
a. Water is typically a liquid at room temperature and 1 atmosphere of pressure. This statement is correct.
b. Ozone (O3) is a gas at room temperature and 1 atmosphere of pressure. This statement is correct.
c. O4 (tetraoxygen) does not exist at room temperature and pressure. Oxygen typically exists as O2, a diatomic molecule. However, under very high pressure, such as in laboratory conditions, it is possible to create and stabilize O4. This statement is correct.
d. CH4 (methane) is a gas at room temperature. It only becomes a liquid at very low temperatures and high pressures. This statement is incorrect since it states that it is a liquid at low pressure.
Therefore, the incorrect statement is d. CH4 is liquid at low pressure.