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3 years ago

Which temperature is required for the cell potential to be the standard cell potential?

Chemistry

2 answers:

In-s [12.5K]3 years ago

8 0

25° C is the temperature required for the cell potential to be the standard cell potential

dedylja [7]3 years ago

4 0

The correct answer is 25 C

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If you only wanted to increase the particle motion of a gas without increasing any of its other properties, which would the most

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Answer:

Explanation:

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2 years ago

Hiii pls help me to write out the ionic equation

emmasim [6.3K]

Answer:

STEP I

This is the balanced equation for the given reaction:-

$2KOH_{(aq)} + H_2SO_4{}_{(aq)} \rightarrow K_2SO_4{}_{(aq)} + 2H_2O_{(l)}$

STEP II

The compounds marked with (aq) are soluble ionic compounds. They must be

broken into their respective ions.

see, in the equation KOH, H2SO4, and K2SO4 are marked with (aq).

On breaking them into their respective ions :-

2KOH -> 2K+ + 2OH-
H2SO4 -> 2H+ + (SO4)2-
K2SO4 -> 2K+ + (SO4)2-

STEP III

Rewriting these in the form of equation

$\underline{\pmb{2K^+} }+ 2OH^- + 2H^+ + \pmb{\underline{{SO_4{}^{2-}}} \: \rightarrow \: \underline{\pmb{2K^+}}} + \underline{\pmb{SO_4{}^{2-}}} + 2H_2O$

STEP IV

Canceling spectator ions, the ions that appear the same on either side of the equation

(note: in the above step the ions in bold have gotten canceled.)

$\boxed{ \mathfrak{ \red{ 2OH^-{}_{(aq)} + 2H^+{(aq.)} \rightarrow H_2O{}_{(l)}}}}$

This is the net ionic equation.

____________________________

$\\$

$\mathfrak{\underline{\green{ Why\: KOH \:has\: been\: taken\: as\: aqueous ?}}}$

KOH has been taken as aqueous because the question informs us that we have a solution of KOH. by solution it means that KOH has been dissolved in water before use.

[Alkali metal hydroxides are the only halides soluble in water ]

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2 years ago

In the crystal structure of potassium oxide, the oxide ions are coordinated by eight potassium ions. part a what is the coordina

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Potassium oxide has the antifluorite structure. The antifluorite structure have compounds with the stoichiometry X₂Y, where X is the cation and Y is the anion. In the antifluorite structure positions of the cations and anions are reversed relative to their positions in calcium fluoride.
Potassium ions coordinated to 4 oxide ions, potassium ions are all in the tetrahedral holes.

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3 years ago

Which of the following atoms has the highest first

77julia77 [94]

Answer:

Helium

Explanation:

The first ionization energy varies in a predictable way across the periodic table.

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2 years ago

Calculate the density of a substance for which 4.78 x 106 L of the substance has a mass of 1.50 x 107 kg. Express your answer us

valentinak56 [21]

7.89 is the correct answer I believe

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2 years ago