A solution of K2SO4 and KCl is added to a solution of Ba(NO3)2. BaS0₄ (s) will precipitate out of this combined solution.
Molecular equation
K2SO4(aq) + Ba(NO3)2(aq) → BaSO4(s) + 2 KNO3(aq)?
This equation represents a double displacement (replacement) reaction, also called a metathesis reaction, in which the reactant ions exchange places to form new products. The general equation is:
A-B + C-D → A-D + C-B;
where A and C are cations, and B and D are anions.
Complete ionic equation: Includes all ions and the precipitate.
2K^+(aq) + SO4^2-(aq) + Ba^2+(aq) + 2[NO3]^-(aq) → 2K^+(aq) + 2[NO3]^- + BaSO4(s)
In an aqueous solution, precipitation is the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution.
The solid formed is called the precipitate. In case of an inorganic chemical reaction leading to precipitation, the chemical reagent causing the solid to form is called the precipitant.
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Br Br2 Br Br (3S,4S,)-dibromohexane (3R,4R.)-dibromohexane
Answer:
d. Metallic
c. S
Explanation:
A metallic bond is an interatomic bond in which valence electrons are constantly moving between atoms like a sea of electrons.
- The formation of this bond type is favored by a large atomic radius, low ionization energy, and a large number of electrons in the valence shell.
- The metallic bond is an attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all the atoms losing their outermost shell electrons.
2. The bond type described in the second problem is an ionic bond. This results in the formation of crystal lattice with strong bonds.
- It occurs between metals and non-metals
- Since Nickel is a metal, sulfur is the only given non-metal that will make it form an ionic bond.
Answer: C. Electrons are lost.
Explanation:
- The oxidation reduction reaction is between oxidizing agent and reducing agent.
- The oxidizing agent gains electrons and reduction process occurs to it, while the reducing agent losses electrons and oxidation process occurs to it.
- oxidizing agent + ne → product <em>"reduction process, gain electrons"</em>
- reducing agent → product + ne<em> "oxidation process, loss electrons"</em>
- Thus, The right answer is: in the oxidation process, electrons are lost.
The given statement is True.
This is single replacement reaction.
As reactivity decreases down the group,
Iodine is less reactive than Chlorine.
And so Iodine cannot replace chlorine from FeCl2.
I2 + FeCl2 ---> no reaction (Iodine is less reactive than chlorine)