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icang [17]
3 years ago
10

Write the chemical equation that represents the process of lattice energy for the case of nacl.

Chemistry
2 answers:
almond37 [142]3 years ago
8 0

The equation for the lattice energy of NaCl is as follows;

\boxed{{\text{N}}{{\text{a}}^ + }\left(g\right)+{\text{C}}{{\text{l}}^ - }\left(g\right) \to {\text{NaCl}}\left(s\right)}

Further Explanation:

Lattice energy:

It is the amount of energy that is released when ions are combined to form an ionic compound or the energy required to break the ionic compound into its constituent gaseous ions. It cannot be measured directly and is denoted by {\mathbf{\Delta }}{{\mathbf{H}}_{{\mathbf{lattice}}}} . It can have positive as well as negative values.

Case I: Positive lattice energy

The value of lattice energy (\Delta }}{{\text{H}}_{{\text{lattice}}}}} \right)) comes out to be positive if the energy supplied to the system is more than that released during the reaction. In other words, {\Delta }}{{\text{H}}_{{\text{lattice}}}} is positive in case of endothermic reactions.

Case II: Negative lattice energy

The value of lattice energy (\Delta }}{{\text{H}}_{{\text{lattice}}}}} \right))  comes out to be negative if the energy released by the system is more than the energy supplied during the reaction. In other words, {{\Delta }}{{\text{H}}_{{\text{lattice}}}} is negative in case of exothermic reactions.

Lattice energy is used to determine the stability of ionic compounds. NaCl is an ionic compound formed by one {\text{N}}{{\text{a}}^ + } ion and one {\text{C}}{{\text{l}}^ - } ion. The value of its lattice energy ({\Delta }}{{\text{H}}_{{\text{lattice}}}}} \right))  is -787 kJ/mol. A high negative value of lattice energy indicates that the formation of NaCl is highly favored.

The equation for the lattice energy of NaCl is as follows;

{\text{N}}{{\text{a}}^ + }\left(g\right)+{\text{C}}{{\text{l}}^ - }\left(g\right)\to {\text{NaCl}}\left(s\right)

Learn more:

1. Balanced chemical equation: brainly.com/question/1405182

2. Oxidation and reduction reaction: brainly.com/question/2973661

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Chemical reaction and equation

Keywords: lattice energy, NaCl, Na+, Cl-, negative, positive, favored, -787 kJ/mol, required, released, stability, ionic compounds.

faust18 [17]3 years ago
4 0

Answer: Na^+(g)+Cl^-(g)\rightarrow NaCl(s),\Delta H_{Lattice}=-786kJ/mol

Explanation:

Lattice energy : It is defined energy released when ions combine together in a gaseous phase to form a compound. it is energy possessed by the crystal lattice of a compound. Denoted by symbol \Delta H_{Lattice}.

\Delta H_{Lattice}=positive , energy is absorbed while forming of the lattice

\Delta H_{Lattice}=negative, energy is release while forming of the lattice

Na^+(g)+Cl^-(g)\rightarrow NaCl(s),\Delta H_{Lattice}=-786kJ/mol

One mole of sodium ion when combines with one mole chloride ion release  786 kJ of energy.

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8 0
3 years ago
If a red blood cell is 100% saturated, how many molecules of O2 are bound to it?1 billion molecules of O24 molecules of O2250 mi
kondor19780726 [428]

Answer:

1 billion molecules O₂

Explanation:

From my research, a human red blood cell contains approximately 270 million hemoglobin molecules.    

A hemoglobin molecule contains four heme groups, <em>each of which has an iron ion forming a coordination complex that carries every dioxygen molecule. </em>Therefore for each hemoglobin molecule, we will have 4 dioxygen molecules. The heme groups are responsible for the transport of every dioxygen and other diatomic gases.                    

Hence, the number of O₂ molecules in a red blood cell saturated with 100% will be:                

\frac{270 \cdot10^{6} hemoglobine molecules}{1 red blood cell} \cdot \frac{4 heme group}{1 hemoglobine molecule} \cdot \frac{1 O_{2} molecules}{1 heme group} = 1 \cdot 10^{9} O_{2} \frac{molecules}{red blood cell}

So, the correct answer is 1 billion of O₂ molecules.  

Have a nice day!

8 0
3 years ago
How much Sr(OH)2 • 8 H2O (M = 265.76) is needed to prepare 250.0 ML of solution in which [OH]= 0.100M?
SVEN [57.7K]
Use the formula 
first step: 
Use the formula 
molarity= mole/liter
change ml to l
plug in data
 to get .1=mole/.25 or .1M*.25liter
which =.025 moles
then divide .025 moles by two because there are two OH in Sr(OH)2 
then multiply that by 265.76 (the molar mass of water) 
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which is 3.32grams this is your answer 




6 0
3 years ago
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Answer:

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Explanation:

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2 years ago
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From the choices, the answers would be:
<span>they require only one electron to complete their outer shell
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6 0
3 years ago
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