Balance each of the following redox reactions occurring in acidic aqueous solution.
art A
K(s)+Cr3+(aq)→Cr(s)+K+(aq)
Express your answer as a chemical equation. Identify all of the phases in your answer.
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Part B
Cd(s)+Cu+(aq)→Cd2+(aq)+Cu(s)
Express your answer as a chemical equation. Identify all of the phases in your answer.
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Cd(s)+2Cu+(aq)→2Cu+(s)+Cd2+(aq) |
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Part C
BrO−3(aq)+N2H4(g)→Br−(aq)+N2(g)
Express your answer as a chemical equation. Identify all of the phases in your answer.
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Balance each of the following redox reactions occurring in basic solution.
Part A
H2O2(aq)+ClO2(aq)→ClO−2(aq)+O2(g)
Express your answer as a chemical equation. Identify all of the phases in your answer.
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H2O2(aq)+2ClO2+OH−→O2(g)+2ClO−2(aq)+2H2O−(l) |
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Part B
Al(s)+MnO−4(aq)→MnO2(s)+Al(OH)−4(aq)
Express your answer as a chemical equation. Identify all of the phases in your answer.
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Part C
Cl2(g)→Cl−(aq)+ClO−(aq)
Express your answer as a chemical equation. Identify all of the phases in your answer.
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In: Chemistry
Wine Chemistry
You are given the task of analyzing a sample of grapes to determine if a vineyard is ready for harvesting
1a. The concentration of tartaric acid is critical. This can be determined by a titration experiment with 0.1M NaOH and a color Indicator (phenolphthalein. The reaction is as follows:
Tartaric acid + 2 NAOH + colorless -> 2 H0+ 2 Na" + Tartrate
You have a 0.010L sample of grape juice and after adding 0.018 L of NaOH solution the color turns pink What is the "Titratable acidity" in g/L of tartaric acid in the grape juice sample?
Steps: volume of NaOH solution moles of NaOH > moles of tartaric acid grams of tartaric acid. Then divide grams of tartaric acid by volume (L) of grape solution
1b. Acidity goes down as grapes ripen. If the answer to the previous problem is less than 7 g/L then the grapes are ready. Based on your answer are they ready?
Sza. The ather important consideration is the concentration of sugar (which increases as grapes ripen). The appropriate sugar level is about 200 g/L What is the molarity of sugar in ripe grape Juice? (molar mass of sugar is 180 g/mole).
26. Amore commonly used unit in wine-making is Brix 1 brix = 10g/Of sugar. It your grape juice sample has a brix reading of 10, is it ready to harvest?
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Calculate how much energy is required to heat 20 mL of water from room temperature to 40 C & also how much energy is released when 20 mL of water is cooled from the initial temperature to 10 C
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How to name organic molecule given a structure?
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Would you expect each of the following atoms to gain or lose electrons when forming ions? Explain details and what is the rule apply to it? 1. P 2. Te
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A 83.0 mL sample of 0.0200 M HIO4 is titrated with 0.0400 M CsOH solution. Calculate the pH after the following volumes of base have been added. (
a) 11.6 mL
pH =
(b) 40.7 mL
pH =
(c) 41.5 mL
pH =
(d) 43.6 mL
pH =
(e) 75.5 mL
pH =
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Calculate the pH at the equivalence point in titrating 0.045 M solutions of each of the following with 0.061 M NaOH.
(a) hydrochloric acid (HCl) pH =
(b) acetic acid (HC2H3O2), Ka = 1.8e-05 pH =
(c) hypoiodous acid (HIO), Ka = 2.3e-11 pH =
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which do you think has a greater effect on evaporation
rate: molar mass or the type of intermolecular force(s) present?
Explain your answer
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What are the four colligative properties (module #4 pg 38)?
If you add NaCl to water, what happens to the boiling point?
Explain with a drawing why the freezing point of seawater is lower than the freezing point of freshwater
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Determine the %(p/p) of CaCO3 of a 25 mg chalk sample dissolved in 25 mL water, 12.5 mL HCl 0.1 M, titrated with 8.6 mL NaOH 0.1 M.
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which compound the greatest lattice energy?
AIP vs AIN
KCl vs KBr
NaCl vs NaBr
MgO vs MgS
NaCl vs KCL
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Considering the ionic equilibrium of your artificial kidney stone, how could you manipulate the chemical environment to decrease the solubility of your stone? What would be the effect of the solubility of your kidney stones if you utilized a strong acid/base versus a weak acid/base?
The kidney stone my group and I used was a calcium phosphate stone.
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Iodine-137 decays to give xenon-137, which decays to give cesium-137. What are the modes of decay in these two reactions?
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