Where 2H2 + O2 --> 2H2O, you will have 16 cm3 oxygen remaining after the reaction.
After reaction, 8 cm3 of hydrogen will react with 16 cm3 of oxygen to form water, leaving 4 cm3 of oxygen unused.
16
16cm
The volume of hydrogen should be twice the volume of oxygen formed in the electrolysis of water because the ratio of the number of moles of hydrogen to oxygen in water is 2:1. This is based on the molecular formula of water, H2O, where each water molecule contains two hydrogen atoms and one oxygen atom.
The volume ratio of hydrogen to oxygen in water is 2:1. This means for every one volume of oxygen, there are two volumes of hydrogen in water.
The label should indicate the concentration of hydrogen peroxide, not volts. If it is labeled 10 volts, it is likely a labeling error as hydrogen peroxide concentrations are typically indicated as a percentage (e.g. 3% hydrogen peroxide).
Hydrogen peroxide is a liquid compound and does not have volumes in the same way that gases or solids do. It is typically sold and measured by its concentration in percentages, such as 3% or 6% hydrogen peroxide.
The reaction between hydrogen and oxygen to form water is given by the equation: 2H2 + O2 -> 2H2O. This means that 2 volumes of hydrogen react with 1 volume of oxygen to produce 2 volumes of water vapor. Therefore, from 10 volumes of hydrogen and 5 volumes of oxygen, 10 volumes of water vapor can be produced.
Hydrogen peroxide is a liquid compound and does not have volumes in the same way that gases or solids do. It is typically sold and measured by its concentration in percentages, such as 3% or 6% hydrogen peroxide.
Approximately twice as much volume of hydrogen as of oxygen: Both gases are diatomic and nearly ideal at normal temperature and pressure, and the atomic ratio of hydrogen to oxygen in water is 2.
Don't try it because if you have 1 volume of oxygen to 2 volumes of hydrogen, it is explosive!
The reaction equation is: 2H2 + O2 = 2H2O So one need two volume part of hydrogen and one volume part of oxygen to form water.
When an electric current is passed through water, it undergoes electrolysis, which breaks water molecules into hydrogen and oxygen gases. The ratio of hydrogen to oxygen gas produced is 2:1, meaning that for every two volumes of hydrogen gas collected, one volume of oxygen gas is collected. Therefore, the volume of gas collected is twice as much for hydrogen compared to oxygen gas.
The volume of hydrogen should be twice the volume of oxygen formed in the electrolysis of water because the ratio of the number of moles of hydrogen to oxygen in water is 2:1. This is based on the molecular formula of water, H2O, where each water molecule contains two hydrogen atoms and one oxygen atom.
In the Hoffman apparatus demonstration, the ratio of hydrogen and oxygen produced indicates the ratio of water's components (H2O). Since water molecule consists of two hydrogen atoms and one oxygen atom, the volume of hydrogen gas produced will be twice that of the oxygen gas when water is electrolyzed.
The label should indicate the concentration of hydrogen peroxide, not volts. If it is labeled 10 volts, it is likely a labeling error as hydrogen peroxide concentrations are typically indicated as a percentage (e.g. 3% hydrogen peroxide).
They would have the same volume, as long as they are in the same conditions.
This means that for every volume of hydrogen peroxide used, 20 volumes of oxygen will be produced. For example, if 1 ml of hydrogen peroxide is used/decomposes, 20 ml of oxygen will be formed.
To determine the volume necessary for hydrogen and oxygen to combine, we need to consider the stoichiometry of the reaction. Hydrogen combines with oxygen in a 2:1 ratio to form water. Therefore, twice the volume of hydrogen is required compared to oxygen. For a 250 ml flask, the volume of hydrogen required would be 166.7 ml, and the volume of oxygen required would be 83.3 ml.
During electrolysis of water, the volume of gas produced at the anode (oxygen) is twice that of the volume of gas produced at the cathode (hydrogen). This is because water molecules (H2O) split into two hydrogen atoms for every one oxygen atom when an electric current is passed through the water during electrolysis.