These are reactions I did in my lab. I need to write the molecular, total ionic, and net ionic reactions for them. Even after watching Khan Academy and using my book, I was still unsure, so I asked the professor and he said every single one was wrong and told me to figure it out.
I know this is long, but I would really appreciate it. I need the molecular, total ionic, and net ionic equations for all of them. It's not making sense to me. Thank you.
a. HCl + CaCO3 → HCO3 + CaCl2
b. NaOH + HCl → NaCl + H2O
c. NaOH + NH4Cl → NaCl + NH4OH
d. FeCl3 + NaOH → NaCl + Fe(OH)2
e. CoCl2 + FeCl3 → NR
f. AgNO3 + CoCl2 → AgCl + Co(NO3)2
g. Na2CO3 + AgNO3 → NaNO3 + Ag2CO3
h. CuSO4 + Na2CO3 → CuCO3 + NaSO4
i. CuSO4 + BaCl2 → CuCl + BaSO4
j. NaSO4 + CuSO4 → NR
k. NiCl2 + Na3PO4 → NiPO4 + NaCl
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For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are [Co3+]= 0.456 M , [Co2+]= 0.451 M , and [Cl−]= 4.50×10−2 M and the pressure of Cl2 is PCl2= 2.30 atm ?
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1.14 mol sample of argon gas at a temperature of 12.0 °C is found to occupy a volume of 30.0 liters. The pressure of this gas sample is ______ mm Hg.
A sample of krypton gas collected at a pressure of 385 mm Hg and a temperature of 284 K has a mass of 94.7 grams. The volume of the sample is _____L.
A 0.238 gram sample of hydrogen gas has a volume of 973 milliliters at a pressure of 2.06 atm. The temperature of theH2 gas sample is _____°C
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HClO is a weak acid (Ka = 4.0 × 10–8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.024 M in NaClO at 25 °C?
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An aqueous solution of glycerin, 7% by weight, is prepared. The solution is found to have a density of 1.0149 g/mL. The density of pure glycerin (MW=92.0473) is 1.2609 g/mL. What is the molarity and molality concentration of the solution?
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A 50.0 -mL sample of 0.50-M acetic acid, CH3COOH, is titrated with a 0.150M NaOH solution. Calculate the pH at equivalence point. (Ka=1.8x10^-5)
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How do oxides, peroxides, and superoxides react? Please go into detail.
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Devise a cell for which the full cell reaction is: Ag+(aq) + Br−(aq) → AgBr (s)
a. What is the cell emf at 25°C?
b. Calculate DG˚rxn from both E° and standard Gibbs energies of formation.
c. Calculate the equilibrium constant.
d. Calculate the solubility, S, of AgBr.
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Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture.
pKa1 = 1.30
pKa2 = 6.70
Calculate the pH for each of the following points in the titration of 50.0 mL of a 1.5 M H3PO3(aq) with 1.5 M KOH(aq).
A) before any addition of KOH
B) after addition of 25.0 mL of KOH
C) after addition of 50.0 mL of KOH
D) after addition of 75.0 mL of KOH
E) after addition of 100.0 mL of KOH
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Determine the composition of each of the following cobalt alloys. (Percent by mass)
A). One-third of the Co atoms are replaced by Zn atoms.
B). One-eighth of the Co atoms are replaced by Ti atoms.
C). One-third of the Co atoms are replaced by Zn atoms and one-sixth of the Co atoms are replaced by Ti atoms.
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What is the ph of the endpoint of the titration of a 25.00mL sample of .10M HAc (60.05g/mol) using .10M NaOH as the titrant? Ka for HAc is 1.75x10^-5
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The enzyme urease catalyzes the reaction of urea, (NH2CONH2), with water to produce carbon dioxide and ammonia. In water, without the enzyme, the reaction proceeds with a first-order rate constant of 4.15 ×10−5s−1 at 100 ∘C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 3.4 ×104s−1 at 21 ∘C
1.If the rate of the catalyzed reaction were the same at 100 ∘C as it is at 21 ∘C, what would be the difference in the activation energy between the catalyzed and uncatalyzed reactions? Express your answer using two significant figures.
2.
In actuality, what would you expect for the rate of the catalyzed reaction at 100 ∘C as compared to that at 21 ∘C?
In actuality, what would you expect for the rate of the catalyzed reaction at 100 as compared to that at 21 ?
The rate of the catalyzed reaction will be significantly lower at 100 ∘C than at 21 ∘C. | |
The rate of the catalyzed reaction will be significantly greater at 100 ∘C than at 21 ∘C. | |
The rate of the catalyzed reaction will be at 100 ∘C will be nearly equal to the rate at 21 ∘C. |
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Chromatography
a)Provide a detailed explanation for the phenomenon of electro-osmotic flow?
b)What is the name of the separation technique this phenomenon is associated with?
c)What is the result of eletro-osmotic flow for your analysis?
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1.Determine the number of moles of ATP that can be synthesized from one mole of CH3(CH2)22COOH. (Show all your work.)
2.Why does the oxidation of unsaturated fatty acids such as oleic acid require additional enzymes? How does the presence of a carbon-carbon double bond change the total number of ATP that can be produced?
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Calculate the pH at 25 degrees Celcius of a 0.35M aqueous solution of phosphoric acid (H3PO4). (Ka1, Ka2, and Ka3 for phosphoric acid are 7.5x10^-3, 6.25x10^-8, and 4.8x10^-13, respectively.)
In: Chemistry