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Natalka [10]
3 years ago
8

Consider the following equilibrium:

Chemistry
2 answers:
balu736 [363]3 years ago
8 0

Answer:

see explanataion

Explanation:

Buffer solutions are defined as solutions containing a weak electrolyte (wk acid or wk base) and the salt of the weak electrolyte.

Given HF(aq) + H₂O(l) ⇄ H₃O(l) + F⁻, a buffer solution would result from a solution composition when  [F -] is equal to [HF]. Such is commonly referred to as a 50/50 buffer as the acid and salt are in equal concentrations. However, a buffer solution still will exist even if the concentrations of acid and salt are not equal. The presence of the weak acid or weak base and the salt of the electrolytes is the only requirement.

Veseljchak [2.6K]3 years ago
3 0

Answer:

B.

Explanation:

Buffer has equal concentrations of A- and HA.

B. when [F -] is equal to [HF]

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In addition to ammonia, nitrogen forms three other hydrides: hydrazine (N₂H₄), diazene (N₂H₂), and tetrazene (N _4 H _4 ).
Elina [12.6K]

(a) Here, we are going to compare the the strength, length, and order of nitrogen-nitrogen bonds in hydrazine, diazene, and N₂.

Total valence electrons in N₂H₄ = 2 × 5 + 4×1 = 4e⁻

Thus, single N-N bond is present in hydrazine (N₂H₄) molecule. Therefore, the bond order is =1

Total valence electrons in N₂H₄ = 2× 5 + 2 ×1 = 12e⁻

Thus,  one  N=N bond is present in diazene  (N₂H₂) molecule. Therefore, the bond order is =2

Total valence electrons in N₂  = 2 × 5 = 10e⁻

Thus,  one  N-N triple bond is present in nitrogen  (N₂) molecule. Therefore, the bond order is =3.

Therefore, the order of bond order is given below:

N₂ (Bond order =3) > diazene  (N₂H₂, bond order =2) > hydrazine (N₂H₄, bond order=1)

We know that, with the increasing bond order, the strength of the bond  increases.

Therefore, the order of the strength of the bond is given below:

N₂ (Bond order =3) > diazene  (N₂H₂, bond order =2) > hydrazine (N₂H₄, bond order=1)

What is Lewis structure explain with example?

A Lewis structure is based on the concept of the octet rule, in which atoms share electrons so that each atom has eight electrons in its outer shell. As an example, an oxygen atom has six electrons in its outer shell.

What is the Lewis structure rule?

The Lewis structure indicates that each Cl atom has three pairs of electrons that are not used in bonding (called lone pairs) and one shared pair of electrons (written between the atoms)

Learn more about Lewis structure :

brainly.com/question/1525249

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7 0
2 years ago
How many moles of magneslum chloride are there in 148 grams of magnesium chloride?
vodomira [7]

Answer:

1.554442238816872 moles

Explanation:

3 0
3 years ago
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Balance the redox reaction Al(s) + MnO4^- (aq) --> MnO2 (s) + Al(OH)4^- (aq) in aqueous basic solution
GREYUIT [131]

Answer:

Al + MnO4- + 2H2O → Al(OH)4- + MnO2

Explanation:

First of all, we out down the skeleton equation;

Al + MnO4- → MnO2 + Al(OH)4-

Secondly, we write the oxidation and reduction equation in basic medium;

Oxidation half equation:Al + 4H2O + 4OH- → Al(OH)4- + 4H2O + 3e-

Reduction half equation:MnO4- + 4H2O + 3e- → MnO2 + 2H2O + 4OH-

Thirdly, we add the two half reactions together to obtain:

Al + MnO4- + 8H2O + 4OH- + 3e- → Al(OH)4- + MnO2 + 6H2O + 3e- + 4OH-

Lastly, cancel out species that occur on both sides of the reaction equation;

Al + MnO4- + 8H2O→ Al(OH)4- + MnO2 + 6H2O

The simplified equation now becomes;

Al + MnO4- + 2H2O → Al(OH)4- + MnO2

4 0
3 years ago
At what stage in c.elegans does cell differentiation occur?<br> zygote<br> larva<br> egg<br> adult
Mila [183]
I'm pretty sure it's larva hope this helps
4 0
3 years ago
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The muscular system and the skeletal system work together so the body can do what?
alexdok [17]

Answer:

pump blood

Explanation:

5 0
3 years ago
Read 2 more answers
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