Answer:
Copper ions are reduced into copper atoms.
Cu²⁺₍aq₎ + 2e⁻ → Cu₍s₎
Explanation:
During electrolysis, the positive H⁺ and Cu⁺ ions move to the negative cathode and negative OH⁻ and Cl⁻ ions move to the positive anode.
At cathode, copper ions are preferentially discharged due to the low electromotive force required to discharge them compared to the hydrogen ion. The copper ions gain the two electrons lost by the chloride ions when the are discharged. (2 Cl⁻₍aq₎ → Cl₂₍g₎ + 2e⁻)
Thus the half equation is as follows:
Cu²⁺₍aq₎ + 2e⁻ → Cu₍s₎
The poly atomic ion formula for ammonium would be NH4+
The family on the periodic table that has a filled outer
energy level is VIIIA. The answer is letter D. They are also called the noble
gases or inert gases. They are virtually unreactive towards other elements or
compounds. They are found in trace amounts in the atmosphere. Their elemental form
at room temperature is colorless, odorless and monatomic gases. They also have
full octet of eight valence electrons in their highest orbitals so they have a
very little tendency to gain or lose electrons to form ions or share electrons with
other elements in covalent bonds.
Answer: Option B) Base
Explanation:
According to Bronsted-Lowry theory, an acid is a substance that donates a proton and produces a conjugate base while a base is a molecule or ion which accepts the proton and produces a conjugate acid.
Thus, water H2O acts as a example of Bronsted-Lowry base while hydrochloric acid, HCl acts as an acid respectively as shown in the reaction below
HCl(aq) + H2O(aq) -> H3O+(aq) + Cl-(aq)
H2O acts as an base by accepting a proton donated by HCl, thus producing hydroxonium ion, H3O+ as a conjugate acid.
Thus, in the given reaction, H2O acts as a base
The answer is flourine
flourine some what sounds like flow so
flourine is a flowing element
