All Questions
Tagged with equilibrium inorganic-chemistry
140
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Equilibrium of zinc ion with ammonia
In my chemistry lab, we are testing the amphoteric properties of this metal. I understand zink can react with an acid or a base to form different compounds in solution based on pH. In one part of the ...
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1
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Finding a Mistake Calculating the pH of Ammonium Acetate
I'm trying to calculate the $\mathrm{pH}$ of a $\pu{0.10 M}$ solution of ammonium acetate, and I am struggling to find what mistake I am making within the following calculations:
We know that $\dfrac{[...
- 102
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2
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How does addition of AgCl affect concentration of iodide in KI solution?
In a mixture of $\ce{AgCl(s)}$ and initial $\pu{0.10 M}$ $\ce{KI}$, what is the $[\ce{I-}]$ after the reaction proceeds?
Disclaimer: This is not a graded assignment, but rather a problem I'm trying to ...
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Why does this acid-base reaction occur?
My teacher told me about the reaction of sodium peroxide with water:
$$\text{Na}_2\text{O}_2 + 2\text{H}_2\text{O} \ce{->} \text{H}_2\text{O}_2 + 2\text{NaOH}$$
Now, the concentration of products ...
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Preparation of a HCN/NaCN buffer that has a pH of 9.8 and an osmotic pressure of 1.35 atm at 298 K
You are asked to prepare $\pu{2.0 L}$ of a $\ce{HCN/NaCN}$ buffer that has a $\mathrm{pH}$ of $9.8$ and an osmotic pressure of $\pu{1.35 atm}$ at $\pu{298 K}$. What masses of $\ce{HCN}$ and $\ce{NaCN}$...
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Question regarding chemical equilibrium when adding a salt to acid solution
Having read the following was wondering something:
$$\mathrm {p}K_\mathrm{a} = -\log\frac{[\ce{H+}]_\mathrm{eq}[\ce{A-}]_\mathrm{eq}}{[\ce{HA}]_\mathrm{eq}} $$
$$\ce{HA <=> H+ + A-}$$
$$\mathrm{...
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How tetraamminecopper(II) is formed? [duplicate]
I'm trying to get a sense of how $\ce{Cu^2+}$ and $\ce{NH3}$ are bonded together because it doesn't make any!
I understand that $\ce{NH3}$ has a lone pair of electrons that can be donated (right?), ...
2
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1
answer
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Finding equilibrium constant for the reaction between non-stoichiometric mix of gaseous components
$$\ce{CH3OH(g) + NOCl(g) <=> CH3ONO(g) + HCl(g)}$$
The volume of the container is $\pu{433 cm^3},$ $T = \pu{50 °C}.$ Methanol was added until the pressure was $\pu{50.1 mbar},$ then $\pu{0.059 g}...
- 1,095
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1
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Calculate Kc with dissociation degree
If I have the reaction
$$\ce{2HI (g) ⇌ H2(g) + I2(g)}$$
and know that at $T = \pu{448 °C}$ the dissociation degree $α = 0.2198,$ how do I calculate $K_c?$
I thought that it would be something like ...
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2
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2
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Can you get potassium by reducing KCl with lithium?
I would have said that the answer was no, because lithium is less reactive than potassium is, so you would expect the reaction to go the other way: with potassium and lithium chloride reacting to ...
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2
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2
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116
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Criterion for gravimetric analysis of silver
If the only criterion for gravimetric analysis of silver is solubility of precipitate, which one of the following two compound are we supposed to choose? $K_\mathrm{s}(\ce{AgCl}) = \pu{1.78E-10}$ and ...
- 31
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Calculating the solubility for chromium(III) hydroxide using the complex ion constant
Problem
$$
\begin{align}
\ce{Cr(OH)3(s) &<=> Cr^3+(aq) + 3 OH-(aq)} &\quad K_\mathrm{sp} &= \pu{6.7E-31} \\
\ce{Cr^3+(aq) + 4 OH-(aq) &<=> Cr(OH)4-(aq)} &\quad K_\...
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Chemical equilibrium of inorganic complexes
After mixing Cobalt(II) Chloride hexahydrate with ammonium chloride a violet complex forms, what would be the complex formed?
It was the precursor for producing hexamine cobalt chloride so I didn't ...
-3
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1
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Entropy of reaction from these givens?
Reaction that happens at 380 Kelvin
$\begin{align} \Delta S^\circ _{sys} &=\pu{-130 J/molK}\\
C_p(\ce{C2H4})&=\pu{43.6 J/molK}\\
C_p(\ce{C2H5OH})&=\pu{65.9 J/molK}\\
C_p(\ce{H2O})&=\pu{...
- 127
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Acorrect range of concentrations for the reactants in the equilibrium reaction
What would be a correct range of concentrations for the reactants in the equilibrium reaction, $\ce{Fe^3+(aq) + SCN-(aq) <=> FeSCN^2+}$?
For a Chemistry project I am measuring the effects of ...
