<span>Left is primary
Middle is secondary
Right is tertiary
Rule look at the carbon the 'OH' functional group is attached.
If that carbon has two hydrogens then it is PRIMARY
If that carbon has one hydrogen then it is SECONDARY
If that carbon has no hydrogens then it is TERTIARY.</span>
Answer:
2 Al(s) + 3 Fe²⁺(aq) → 2 Al³⁺(aq) + 3 Fe(s)
6 electrons are transferred.
Explanation:
Let's consider the following standard reduction potentials.
E°(Al³⁺/Al) = -1.66 V
E°(Fe²⁺/Fe) = -0.44 V
The one with the highest standard reduction potential will occurs as a reduction and the other will occur as an oxidation. The corresponding half-reactions are:
Oxidation: Al(s) → Al³⁺(aq) + 3 e⁻
Reduction: Fe²⁺(aq) + 2 e⁻ → Fe(s)
To get the global equation, we have to multiply both half-reactions by numbers that assure that the number of electrons gained and lost are the same, and then add them.
2 × (Al(s) → Al³⁺(aq) + 3 e⁻)
3 × (Fe²⁺(aq) + 2 e⁻ → Fe(s))
----------------------------------------------------
2 Al(s) + 3 Fe²⁺(aq) + 6 e⁻ → 2 Al³⁺(aq) + 6 e⁻ + 3 Fe(s)
2 Al(s) + 3 Fe²⁺(aq) → 2 Al³⁺(aq) + 3 Fe(s)
Forward reaction rate equals the reverse reaction rate. At this point the concentration of reactants and products will remain constant and thus equilibrium.
It uses <span>nuclear fusion </span>
<span>nuclear fission </span>
<span>hydrogen radioactivity </span>
<span>spontaneous decay
</span>
There's three types of decay: alpha beta and gamma.
*
Alpha decay is the emission of a helium nucleus (2protons and 2 neutrons)
*
Beta decay is the emission of an electron or a positron (
or
). It does affect the weight of the atom.
*
Gamma decay is the emission of photons with a high energy. It does affect the weight of the atom.
To answer the question,
any nuclear reaction which decreases the atomic weight by 4 and the protons by 2 is an alpha decay. (release of an alpha or helium nucleus)