Search found 257 matches
- Sat Feb 24, 2024 7:02 am
- Forum: Chemistry forum
- Topic: Bond angles and hybridizations at atom in the molecule of aniline and other unknown molecule
- Replies: 3
- Views: 1868
Re: Bond angles and hybridizations at atom in the molecule of aniline and other unknown molecule
What is the name of first molecule? Second one is aniline. Is that correct?
- Sat Feb 24, 2024 4:49 am
- Forum: Chemistry forum
- Topic: Bond angles and hybridizations at atom in the molecule of aniline and other unknown molecule
- Replies: 3
- Views: 1868
Bond angles and hybridizations at atom in the molecule of aniline and other unknown molecule
https://chemistryhelpforum.com/attachments/1708769807553-png.690/ Many artificial intelligence companions could not answer this question. Author also has not given answer to this question. I am working on this question. If any member of this forum knows the correct answer, may reply to this question.
- Thu Feb 08, 2024 3:11 am
- Forum: Chemistry forum
- Topic: Aqueous solution in both sulfate ion and chromate ion
- Replies: 4
- Views: 4013
Re: Aqueous solution in both sulfate ion and chromate ion
Answers
(a)[Pb²⁺] = 1.6 ⨯ 10⁻⁸ ÷ 0.10 =1.6⁻⁷
(b)[Pb²⁺] = 1.7 ⨯ 10⁻¹⁴ ÷ 0.10 = 1.7 ⨯ 10⁻¹³
(c)PbCrO₄ will precipitate first.
(d) CrO₄²⁻ = 1.7 ⨯ 10⁻¹⁴ ÷ 1.6 ⨯ 10⁻⁸ = 1.1 ⨯ 10⁻⁶
(a)[Pb²⁺] = 1.6 ⨯ 10⁻⁸ ÷ 0.10 =1.6⁻⁷
(b)[Pb²⁺] = 1.7 ⨯ 10⁻¹⁴ ÷ 0.10 = 1.7 ⨯ 10⁻¹³
(c)PbCrO₄ will precipitate first.
(d) CrO₄²⁻ = 1.7 ⨯ 10⁻¹⁴ ÷ 1.6 ⨯ 10⁻⁸ = 1.1 ⨯ 10⁻⁶
- Thu Feb 08, 2024 2:22 am
- Forum: Chemistry forum
- Topic: Precipitation reactions
- Replies: 4
- Views: 4122
Re: Precipitation reactions
Your answer to question (b) is 1, 2 and 3 or only 3?
In my opinion, the formation of solid AgCl depends upon insolubility of AgCl, the temperature and the solubility product expression and \(K_{sp}\)
In my opinion, the formation of solid AgCl depends upon insolubility of AgCl, the temperature and the solubility product expression and \(K_{sp}\)
- Fri Jan 12, 2024 9:22 am
- Forum: Chemistry forum
- Topic: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
- Replies: 9
- Views: 5365
Re: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
Author said MgF2 not CuI will dissolve in dilute HNO_3 but not in H_2O . You didn't say MgF_2 , MnS will also dissolve in dilute HNO_3 but not in H_2O Yes, both MgF_2 and MnS contain anions of weak acids. - MgF_2 contains the fluoride ion ( F^- ) which is the conjugate base of hydrofluoric acid ( HF...
- Fri Jan 12, 2024 9:06 am
- Forum: Chemistry forum
- Topic: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
- Replies: 9
- Views: 5365
Re: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
Following link are useful for your reference. https://www.chemicalaid.com/tools/equationbalancer.php?equation=CuI+%2B+HNO3+%3D+CuNO3+%2B+2HI https://www.chemicalaid.com/tools/equationbalancer.php?equation=CuI+%2B+HNO3+%3D+I2+%2BNO3+%2B+CuH Author's answer.png I am sorry. CuI will not dissolve in dil...
- Fri Jan 12, 2024 3:05 am
- Forum: Chemistry forum
- Topic: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
- Replies: 9
- Views: 5365
Re: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
Cuprous Iodide + Nitric Acid = Copper(I) Nitrate + Hydrogen Iodide CuI + HNO_3 \rightleftharpoons CuNO3 + HI is a Double Displacement (Metathesis) reaction where one mole of Cuprous Iodide [CuI] and one mole of Nitric Acid [HNO3] react to form one mole of Copper(I) Nitrate [CuNO3] and one mole of Hy...
- Fri Jan 12, 2024 2:20 am
- Forum: Chemistry forum
- Topic: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
- Replies: 9
- Views: 5365
Re: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
MnS (Manganese Sulphide) and CuI (Copper Idodide) will also dissolve in dilte \(HNO_3\) but not in\(H_2O\)
- Wed Jan 10, 2024 2:43 am
- Forum: Chemistry forum
- Topic: Precipitation reactions
- Replies: 4
- Views: 4122
- Wed Jan 10, 2024 12:54 am
- Forum: Chemistry forum
- Topic: Aqueous solution in both sulfate ion and chromate ion
- Replies: 4
- Views: 4013
Aqueous solution in both sulfate ion and chromate ion
An aqueous solution is 0.10 M in both sulfate ion and chromate ion. Powdered lead nitrate(Ⅱ) is slowly dissolved in the well-stirred solution. (Assume no volume change). (a) What is the concentration of Pb²⁺ when PbSO₄ first start to precipitate? (b)What is the concentration of Pb²⁺ when PbCrO₄ firs...
- Wed Jan 10, 2024 12:19 am
- Forum: Chemistry forum
- Topic: Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
- Replies: 9
- Views: 5365
Predict which of the following compound will dissolve in the diluted HNO₃ but not in H₂O
(a) SrCO3 (b)PbBr2 (c)MgF2 (d)MnS (e)Cul (f)Fe(OH)2(g)Hg2Cl2 (h)FeC2O4 (i)PbCl2 (j)CaCrO4
I am working on finding out answers to this question. Any member may provide hint to me.
I am working on finding out answers to this question. Any member may provide hint to me.
- Tue Apr 04, 2023 1:53 am
- Forum: Chemistry forum
- Topic: Computing cell potentials
- Replies: 2
- Views: 2546
Computing cell potentials
The standard reduction potential for the reaction [Co(H_2O)_6]^3+(aq) + e^- \to [Co(H_2O)_6]^2+ (aq) is about 1.8 V. The standard reduction potential for the reaction [Co(NH_3)_6]^3+(aq) + e^- \to [Co(NH_3)_6]^2+ (aq) is + 0.1 V. Compute the cell potentials to show whether the complex ions, [Co(H_2O...
- Thu Mar 02, 2023 12:06 am
- Forum: Chemistry forum
- Topic: Redox reaction
- Replies: 3
- Views: 3298
Re: Redox reaction
The balanced chemical equation for the reaction is: 6 Fe^{+2} + Cr_2O_7^{-2} + 14 H^+ \rightarrow 6 Fe^{+3} + 2 Cr^{+3} + 7 H_2O From the equation, we can see that 6 moles of Fe^{2+} react with 1 mole of Cr_2O_7^{2-} . Therefore, the number of moles of Fe^{2+} in the sample is: n(Fe^{2+}) = \frac{0....
- Wed Mar 01, 2023 7:19 am
- Forum: Chemistry forum
- Topic: Redox reaction
- Replies: 3
- Views: 3298
Redox reaction
Iron(II) can be oxidized to iron(III) by dichromate ion, which is reduced to chromium(III) in acid solution. A 2.5000-g sample of iron ore is dissolved and the iron converted into iron(II). Exactly 19.17 mL of 0.0100 M Na_2Cr_2O_7 is required in the titration. What percentage of the ore sample was i...
- Sat Aug 20, 2022 9:18 am
- Forum: Chemistry forum
- Topic: E° for Ti⁰ ⇌ Ti³⁺ + 3 e⁻
- Replies: 9
- Views: 3330
Re: E° for Ti⁰ ⇌ Ti³⁺ + 3 e⁻
The table in your link says Ti³⁺ + 3 e⁻ ⇌ Ti⁰ E° = -1.208 V
Reverse it for oxidation of Titanium metal Ti⁰ ⇌ Ti³⁺ + 3 e⁻ E° = +1.208 V
Reverse it for oxidation of Titanium metal Ti⁰ ⇌ Ti³⁺ + 3 e⁻ E° = +1.208 V