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![[ Al+3]?
[2.91×10-4]*
=4. 56 × 1010
3
[Al+31=4. 56 × 1010 × [2.91 × 10"
4)*
=4. 56 × 1010 × 2. 464 × 10-11
=1. 1236
[Al+*]=V1. 1236
=1.06 M
Therefore,
the concentration of Al+3 is 1.06 molars](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Febb87813-1f25-4c25-a2a9-8d3b5da8deed%2F3fa4d96f-7a7b-4612-94d3-d496e8a1a415%2Fisqjk4t_processed.jpeg&w=3840&q=75)
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- Ba(NO3)2 + Na2CO3 → Mg(NO3)2 + K2CRO4 → Ca(NO3)2 + K2CrO4 → Sr(NO3)2 + K2CrO4→ -> Ba(NO3)2 + K2CRO4→9bii and 11b3. Use the following atomic masses (in g/mol): As = 74.92; O = 16; K = 39.1; Cr = 52; Na = 23; Cl = 35.45; Ba = 137.33; S = 32.06, Twenty tabs of Ascorbic Acid weighed 4.25g and a powdered sample of 0.3075g consumed 21.5mL of 0.1085N I2 solution. What was the amount of ascorbic acid per dose of two tablets? Each mL of 0.1N I2 is equivalent to 8.803mg of ascorbic acid.
- Based on the provided chart of reduction potentials, rank the following chemicals from strongest (1) to weakest (5) oxidizing agents. Ered (V) +2.87 +1.33 +1.23 +1.06 +0.96 +6.77 +0.68 40.59 1054 ✓ +0.440 +0.34 0'defined -0.28 -0.83 1.66 -2.71 Half-Reaction Ashtimi ¹₂(g) +2€¯¯¯ 2F (aq) MnO4 (aq) + 8 H(aq) + Se Cl₂(g) +2e™ 2 Cl¯ (aq) Cr₂O₂(aq) + 14 H*(aq) + 6 e˜ — 2 Cr³" (aq) + 7 H₂O(1) O₂(g) + 4 H*(aq) + 4e¯¯ — 2H₂O(1) Br₂() +2 e 2 Br (ag) NO₂(aq) + 4 H* (aq) + 3 e¯ — NO(x) + 2 H₂0(1) Ag (aq) + e 20 ME Fe³+(aq) + e¯ —— Fe²¹ (aq) O(g)+2H^(aj) 24 HO(m) MnO, (aq) + 2H₂O(l) + 3e¯ —— MnO₂(s) + 4 OH¯(aq) L₂(s) + 2 ¤¯ ————— 21 (aq) O₂(g) + 2 H₂O(l) + 4 e Cu²+ (aq) + 2 e 2e 2H(aq) + 2 e Ni²" (aq) + 2e – Feª™ (aq) + 2 e Zn²+ (aq) + 2 2e — 2 H₂O(l) +2e Al (aq) + 3 e Na (aq) e Li(aq) + e H Mn² (aq) + 4H₂O(1) Cu(s) H₂(g) Ni(s) > Fe(s) Zn(s) Hag) + 2OH(aq) Al(s) —— Na(s) 40H (aq)You were assigned to assay a product sample of milk of magnesia. A 0.600-g sample was reacted with 25.00 mL 0.10590 N H2SO4. The excess unreacted acid in the solution required 13.00 mL of 0.09500 N NaOH when titrated to reach the methyl red end point. In terms of Mg(OH)2 content, does the sample product conform to the USP requirement? Justify your answer through calculations.Write the balanced chemical equation for conversion of Al(s) to KAl(SO4)2·12H2O(s) in aqueous solution. Equation 1 - 2Al(s) + 2K+(aq) + 2OH-(aq) + 10H2O(l) --> 2K+(aq) + 2[Al(H2O)2(OH)4)-(aq) + 3H2(g) Equation 2 - 2K+ (aq) + 2[Al(H2O)2(OH)4]-(aq) + 2H+(aq) + SO42-(aq) --> 2K+(aq) + SO42-(aq) + 2Al(H2O)3(OH)3(s) Equation 3 - 2Al(H2O)3(OH)3(s) + 6H+(aq) + 3SO42-(aq) --> 2Al3+(aq) + 3SO42-(aq) + 12H2O(l) Equation 4 - K+(aq) + Al3+(aq) + 2SO42-(aq) --> KAl(SO4)2∙12H2O(s)
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- In an aqueous solution at 25 °C, if [HO] = 9.1 x 104 M, then [OH-] is: 8.0 F3 shot for a F5 F6 8 F7 DII F9 1 4 7 +/- F10 2 5 8 M 3 6 9 0 X C x 10You were assigned to assay a product sample of milk of magnesia. A 0.600-g sample was reacted with 25.00 mL 0.10590 N H2SO4 . The excess unreacted acid in the solution required 13.00 mL of 0.09500 N NaOH when titrated to reach the methyl red end point. Determine the dosage strength of the product in terms of % Mg(OH)2 content. Type your answer in 2 decimal places, numbers only.A mixture of solid chlorides was known to contain some or all of the following cations: Ag ,Al^3+Cr^3+,Ca^2+,and/or Zn^2+ . A student performed the following steps: 1.Water was added to the solid and the mixture was stirred well. After several minutes, some of the solid did not dissolve. The mixture was centrifuged and the supernatant was decanted from the solid (solution A). 2. NH4CI(aq) was added to solution A followed by NH3(aq) until the solution was basic to litmus. A gray-green precipitate was formed. The mixture was centrifuged and the supernatant (solution B) was decanted. The solid dissolved in NaOH(aq) and H2O2(aq) to form a light yellow solution. The solution was heated to dryness to remove the H2O2 and the solid was redissolved in HCI(aq). When ammonia was added to make the solution basic, a light yellow solution formed and no solid precipitated. 3. (NH4)2C204(aq) was added to solution B, and a precipitate formed. The mixture was centrifuged and the supernatant (solution C)…