Answer:
Electrolysis
Explanation:
The electrolysis of water is one such experiment that shows that water is made up of hydrogen and oxygen atoms only in the ratio of 2 to 1.
In the electrolysis of water, electricity is passed through acidified water to cause it to decompose.
The electrolysis of water is also known as the electrolysis of dilute tetraoxosulphate (VI) acid.
At the cathode, H⁺ ions are discharged and hydrogen gas is liberated:
2H⁺ + 2e⁻ → H₂
At the anode, both the sulfate ion and hydroxyl ions migrate to this electrode. Only the OH⁻ is selected for preferential discharge due to its lower position in that activity series.
4OH⁻ → 2H₂O + O₂ + 4e⁻
Oxygen gas is produced at the anode.
This electrolysis demonstrates the volumetric composition of water that is, 2 volumes of hydrogen at the cathode and 1 volume of oxygen at the anode.
Answer:
-5,921x10⁶J/mol
Explanation:
Internal energy change (ΔU) for the reaction of combustion in the bomb calorimeter is:
ΔU = q calorimeter + q solution
Where:
q calorimeter is Ccal×ΔT (Ccal=4042J/°C) and (ΔT is 29,30°C-22,64°C=<em>6,66°C</em>)
q solution is c×m×ΔT (c= 4.184 J/g°C), (m=1502g H₂O), (ΔT is 29,30°C-22,64°C=<em>6,66°C</em>)
Replacing:
ΔU = 26920J + 41854J = <em>68774 J</em>
This energy is per g of n-hexane, now, per mole of n-hexane:
= -<em>5,921x10⁶J/mol</em>
<em>-negative because the energy is produced-</em>
I hope it helps!
I would definitely say that's false.
hope this helps you!:-)
Answer:
Oxygen molecule is 2 oxygen atoms in a covalent bond, whereas an oxygen atom is an atom with 8 electrons (6 valence electrons).
Thus, clearly, any element in a bonded state is always more stable than when in an un-bonded state.
Explanation:
There’s no pic for me to awnser your question
