1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dusya [7]
3 years ago
6

Add electron dots and charges as necessary to show the reaction of potassium and bromine to form an ionic compound

Chemistry
2 answers:
S_A_V [24]3 years ago
8 0

Explanation: Electron dot structures are the lewis dot structures which represent the number of valence electrons around an atom in a molecule.

The electronic configuration of potassium is [Ar]4s^1

Valence electrons of potassium are 1.

The electronic configuration of Bromine is [Ar]4s^24p^5

Valence electrons of bromine are 7.

These two elements form ionic compound.

Ionic compound is defined as the compound which is formed from the complete transfer of electrons from one element to another element.

Here, one electron is released by potassium which is accepted by bromine element. In this process, Potassium becomes cation having +1 charge and Bromine become anion having (-1) charge.

The ionic equation follows:

K^++Br^-\rightarrow KBr

The electron dot structure is provided in the image below.

madreJ [45]3 years ago
8 0

Answer:

Explanation:

1st) Look for the valence electrons of each element in the periodic table: Valence electrons are electrons in the latest shell of an atom and are the ones that can interact during a chemical reaction.

In this case, the potassium atom has 1 valence electron and the bromine atom has 7 valence electrons. (The electrons of potassium and bromine are shown in the attachment as cross and dot for better understanding).

2nd) Check which atom has more electronegativity:

The electronegativity is the capability that an atom has to attract to it the electrons of another atom during a chemical bond. If two atoms has a very high difference of electronegativity, it means that they will produce an ionic compund. Through the periodic table, electronegativity of elements increases from left to right in a period and increases from bottom to top in a group.

In this example, potassium atom is on the left side of the periodic table and bromine atom is in the right side, so bromine is much electronegative than potassium and it will take the valence electron of potassium.

<u />

3rd) Representation:

An ionic compound does not exactly form bonds but forms an crystalline structure where the most electronegative element attract to it the electrons of the less electronegative element.

So, we <u>do not draw a bond</u> in the final compound. The correct way of represent an ionic compound is to draw into parentheses each element.

In this case, potassium stays without its electron because bromine takes it, that's why potassium parentheses has no electrons and outside it we write a plus sign to show it lost 1 electrons.

In the same way, bromine has its 7 electrons and we add the electron it took from potassium, then we write a minus sing outside its parentheses because bromine atom has 1 extra electron now.

Note:

Remember that an ionic compound, as its name says, it is made from ionic atoms, so, it is important to represent it with ions.

In the example, potassium is the cation (<u>ion with positive charge</u>) and bromine is the anion (<u>ion with negative charge</u>).

You might be interested in
1. Unas de las formas de producir nitrógeno gaseoso (N2) es mediante la oxidación de metilamina (CH3NH2), tal como se muestra en
Maslowich

Answer:

a) 4CH₃NH₂ + 9O₂ ⇄  4CO₂ + 10H₂O + 2N₂    

b) m = 5,043 g

c) % = 69,4 %

Explanation:

a) La ecuación balanceada es la siguiente:

4CH₃NH₂ + 9O₂ ⇄  4CO₂ + 10H₂O + 2N₂              

En el balanceo, se tiene en la relación estequiométrica que 4 moles de metilamina reacciona con 9 moles de oxígeno para producir 4 moles de dióxido de carbono, 10 moles de agua y 2 moles de nitrógeno.  

b) Para determinar la masa de nitrógeno se debe calcular primero el reactivo limitante:

n_{O_{2}} = \frac{m}{M} = \frac{25,6 g}{31,99 g/mol} = 0,800 moles      

n_{CH_{3}NH_{2}} = \frac{4}{9}*0,800 moles = 0,356 moles

De la ecuación anterior se tiene que la cantidad de moles de metilamina necesaria para reaccionar con 0,800 moles de oxígeno es 0,356 moles, y la cantidad de moles iniciales de metilamina es 0,5 moles, por lo tanto el reactivo limitante es el oxígeno.

Ahora, podemos calcular la masa de nitrógeno producida:

n_{N_{2}} = \frac{2}{9}*n_{O_{2}} = \frac{2}{9}*0,8 moles = 0,18 moles

m_{N_{2}} = n_{N_{2}}*M = 0,18 moles*28,014 g/mol = 5,043 g

Por lo tanto, se pueden producir 5,043 g de nitrógeno.

c) El redimiento de la reacción se puede calcular usando la siguiente fórmula:

\% = \frac{R_{r}}{R_{T}}*100

<u>Donde</u>:

R_{r}: es el rendimiento real

R_{T}: es el rendimiento teórico

\% = \frac{3,5}{5,043}*100 = 69,4

Entonces, el procentaje de rendimiento de la reacción es 69,4%.

Espero que te sea de utilidad!        

5 0
3 years ago
Hich of the following statements is true about what happens during a chemical reaction?
postnew [5]
I believe it is <span>d. the bonds of both the reactants and the products are formed.</span>
6 0
3 years ago
If you filter a mixture of sand and salt-water, what will the solid residue in the filter paper consist of?
julia-pushkina [17]
Sand only bc the salt dissolved and sand doesn't
8 0
3 years ago
Is always
Studentka2010 [4]

Answer:

o atom, smaller, anion is the right answer of the following

7 0
3 years ago
Determine the vapor pressure (atm) of rubbing alcohol (isopropanol) at 20.0 °C. The normal boiling point of isopropanol is 82.3
jeyben [28]
Here we apply the Clausius-Clapeyron equation:
ln(P₁/P₂) = ΔH/R x (1/T₂ - 1/T₁)

The normal vapor pressure is 4.24 kPa (P₁)
The boiling point at this pressure is 293 K (P₂)
The heat of vaporization is 39.9 kJ/mol (ΔH)
We need to find the vapor pressure (P₂) at the given temperature 355.3 K (T₂)

ln(4.24/P₂) = 39.9/0.008314 x (1/355.3 - 1/293)
P₂ = 101.2 kPa
8 0
3 years ago
Other questions:
  • Sulfur does not dissolve in water but it does dissolve in carbon disulfide
    9·2 answers
  • If you are mixing a solution in a spray bottle with 15 oz of water how much chlorine do you need to add for the correct ratio
    9·1 answer
  • What is the name of the visible surface of the Sun? (And surface doesn’t imply solid, as this surface’s density is 6000 times lo
    10·1 answer
  • What is the difference between an element and a compound?
    9·2 answers
  • What is the molality of a solution containing 8.0 grams of solute in 0.50 kg of solvent?
    9·2 answers
  • under a pressure of 1.0 atm , a confined gas has a volume of 750mL. at constant temperature, the pressure is increased until the
    5·1 answer
  • PLEASE HELP ILL GIVE BRAINLIEST
    10·1 answer
  • Is orange juice a element or a mixture
    5·2 answers
  • Canany one heelp me plzzzzzzz
    13·2 answers
  • Carbonates are typically insoluble, but one exception would be a carbonate containing what kind of cation? a) ammonium b) a tran
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!