Answer:
(A) proceeding without external influence once it has begun.
Explanation:
<em>A reaction that is spontaneous can be described as</em>
<em>(A) proceeding without external influence once it has begun.</em> TRUE. A spontaneous reaction has a tendency to proceed in the way it has begun. It is spontaneous when Gibbs free energy is negative.
<em>(B) releasing heat to the surroundings.</em> FALSE. If the reaction is exothermic (enthalpy negative), one still has to take into account the effect of the entropy on Gibbs free energy.
<em>(C) proceeding in both the forward and reverse directions.</em> FALSE. This just means that the reaction is reversible.
<em>(D) increasing in disorder.</em> FALSE. This means that entropy increases but it is still necessary to take into account the effect of enthalpy on Gibbs free energy.
<em>(E) having the same rate in both the forward and reverse directions.</em> FALSE. This is related to the kinetics but not the spontaneity.
Sr is the most reactive. Correct me if I'm wrong :/
B. How much matter something contains
The given complex Ion is,
[Co(CN)₃]³⁻
In complex compounds the Positive part is named first, followed by name of Negative part. In given case there is no Positive part. So, we will name the Negative part.
In Sphere the Ligands are named first. In this case there are 6 CN⁻ ligands. As CN⁻ (cyanide) contains a negative charge so the -ide is replaced by -o. i.e. Cyanide → Cyano. Also, Hexa is placed before Cyano as there are 6 CN⁻ Ligands.
So,
Hexacyano
After that Chromium metal is named. As there is a negative charge on the sphere, so the -ium in Chromium is replaced by -ate.
i.e. Chromium → Chromate. And the oxidation state of Cr is written in Roman. Hence,the name is as,
Hexacyanochromate (III) Ion
Answer:
Chromium(III) Sulfite Cr2(SO3)3 Molecular Weight
Mg(ClO)2 - PubChem
Ni(NO3)2
