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4 years ago

Which equilibrium expression represents the ionization of water?

Chemistry

2 answers:

Tems11 [23]4 years ago

8 0

Keq = [H3O+][OH-] .............................

pav-90 [236]4 years ago

5 0

H₂O + H₂O ⇄ H₃O⁺ + OH⁻

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Tanzania [10]

Answer:

Based on the evidence, the layers, of which the fossils were discovered, the climate was a beach before becoming a forest.

Explanation:

8 0

2 years ago

Given the E0 values of the following two half-reactions: Zn  Zn2+ + 2e- E0 = 0.763 volt Fe  Fe2+ + 2e- E0 = 0.441 volt a) Writ

34kurt

Answer:

For a: The balanced chemical equation is written below.

For b: The corrosion of iron pipe will take place in the presence of zinc.

For c: Zinc will not protect iron pipe from corrosion.

Explanation:

For a:

The given half reaction follows:

The substance having highest positive $E^o$ potential will always get reduced and will undergo reduction reaction. Here, zinc will undergo reduction reaction will get reduced.

Oxidation half reaction: $Zn\rightarrow Zn^{2+}+2e^-;E^o_{Zn^{2+}/Zn}=-0.763V$

Reduction half reaction: $Fe+2e^-\rightarrow Fe;E^o_{Fe^{2+}/Fe}=-0.441V$

The balanced chemical equation follows:

$Fe+Zn^{2+}\rightarrow Fe^{2+}+Zn$

For b:

For a reaction to be spontaneous (thermodynamically feasible) , the standard electrode potential must be positive.

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{cathode}-E^o_{anode}$

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

Calculating the $E^o_{cell}$ using above equation, we get:

$E^o_{cell}=-0.441-(-0.763)=0.322V$

As, the EMF is coming out to be positive, the reaction will be thermodynamically feasible and corrosion of iron pipe will take place in the presence of zinc.

For c:

As, the EMF of the cell is positive, the zinc will not protect the iron pipe from corrosion and the reaction will take place.

4 0

3 years ago

Which atom, O or N, has the greater atomic radius?

alukav5142 [94]

Answer:

Nitrogen because it has a greater value of PPM, so the bigger the radii

Explanation:

plz give Brainlyest

8 0

3 years ago

Why are vials made from vapor glass stronger then typical vials?

Drupady [299]

Answer:

Explanation:

I'm not that sure plz tell me if this is right

6 0

3 years ago

What is the total number of hydrogen atoms contained in one molecule of (NH4)2C204?

Ber [7]

Answer:

=8 atoms

Explanation:

In (NH4)2C2O4 there are four moles of Hydrogen in the compound (NH4), but there two molecules of (NH4) in this compound. That's what the 2 in (NH4)2 means, so multiply 4 x 2 = 8.

Hope this helps (:

8 0

3 years ago

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