To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.2100M sodium hydroxide (NaOH) solution to a 24.0 g sample the fluid and collects the solid nickel(II) hydroxide (Ni(OH)₂) product. When no more Ni(OH)₂ is produced, he filters, washes and weighs it, and finds that 242. mg has been produced. The balanced chemical equation for the reaction is: Ni² (aq) + 2NaOH(aq) 1 What kind of reaction is this? Ni (OH)₂ (s) + 2 Na' (aq) If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base. If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized. Calculate the mass percent of Ni in the sample. Be sure your answer has 3 significant digits. O precipitation O acid-base Ⓒredox 0 0 0 X Ú

Q: d. 1) LDA OCH3 2) CH;CH2I е. 1) LDA 2) CH3I

A: Lithium diisopropyl amide (LDA) is strong and bulkier base. Due to bulkier in nature of the LDA it…

Q: HẠl HN- -Br H.

A: This reaction is carried out between Aldehyde and hydrazine.

Q: ii OMe NaH, dry THF -5°C for 1h, RT for 3h, 45% НО. COOMe OH 2

A:

Q: Did you first add the H2O(l) on the right side of the equaton and then added the 2HO- on the left…

A: In this question, we have to answer the above question preceding the previous problem.

Q: Name Formula Conjugate Acid Ammonia NH3 NH,+ 1.8 x 10-5 |Methylamine CH3NH, CH,NH,+ 4.38 × 104…

A: Note - Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: When comparing a solution of HNO3([HNO3=0.3M]) and a solution of H2SO4 ([H2SO4 = 0.3M]) - which…

A: Logarithm of concentration of hydronium ion [ H3O+] in the solution is known as pH of the solution.…

Q: C excess CH3OH H+

A: Cyclic esters are called lactonesLactones upon treated with alcohols in presence of acid the ring…

Q: а. CrO3 ОН A H,SO4, H2O [1] O3 B b. [2] H2O (2 equiv) С. KMNO4 HO, O2N

A:

Q: 1. LDA 2. CH,CH Br b. a. d. C.

A:

Q: Which of the alcohols is 3°? CB 5-од. OH 111 0 A) ОН O B) 0 c) 1 || X. 4 CH, IV -CH₂

A: Since, If carbon containing -OH is surrounded by three carbon then alcohol is known as 3° alcohol.…

Q: Select one or more: O HCO3- H₂PO4 0 Which of these substances is amphoteric? 0 0 0 HS- HELSHE H₂SO4…

A: We have to select the amphoteric substances

Q: OH HN3, PPh3 NÊN COI COOEt Etooc-NN-C (Dead)

A: The given reaction is an example of the Mitsunobu reaction where nucleophilic substitution of…

Q: 8. A a. A: PCC; OsO4, then NaHSO4 c. A: PCC; B: H2CrO4 ОН В ОН b. A: H2CrO4; B: PCC d. A: 1. POCl3,…

A: -> PCC (pridinium chlorochromate) is oxidizing agent which can give partial oxidation of alcohol…

Q: 1.9-BBN, THF 2. H₂O2, NaOH Select to Draw Q U

A: Now, the alkyne and the alkane have the same number of carbon atoms.

Q: 4) CH, = CH CH, CHO CHO 5) OH 6) Br

A: IUPAC stands for Internal Union of Pure and Applied Chemistry. The IUPAC nomenclature follows some…

Q: Which of the following options best completes the sequence below? OH ? 1. aq. HCI; 2. NaOH, heat; 3.…

A: The question aims to identify the reagents required to transform the methyl cyclohexene to…

Q: Identify the best conditions to complete the SN2 reaction shown below. Br A) CHI, THF B) HBr, THF C)…

A:

Q: Calculate the value of AH (in kilojoules per mole) for the following reaction:

A:

Q: What is the conjugate base of HSO4°? 22 SO42 H2SO4 S03 H2O II III IV Multiple Choice II II IV

A: Given ion is HSO4-  It is an acidic anion because it donates H+ in aqueous solution.

Q: Which of the indicated structural fragments give rise the coupling patterns depicted below? CH3 CH3…

A:

Q: Identify the compound that has the weakest bond dipole. O decane, C₁0H22 hydrofluoric acid, HF…

A: The compound has least electronegativity difference between bonded atoms has weakest bond dipoles.…

Q: a) HC=CH 1. NaNH 2. PhCH₂Br 3. NaNH, 4. CH3CH₂I

A: -> NaNH2 is base which can abstract most acidic hydrogen from molecule and form carbanion. In…

Q: This organic compound shown in Question 4 is classified as a(n) Oa. alcohol O b. carboxylic acid OC.…

A: Organic compounds are formed by two main elements, carbon, and hydrogen. The specific group of atoms…

Q: why NaH and M.C. are needed in this reaction? NaH OEt DEt Eto Eto М.С.

A: The Horner-Wadsworth-Emmons reaction is the modified Wittig reaction which make use of stabilized…

Q: None

A: The acidic strength of a compound depends on the  factor that how readily the compound will release…

Q: 4. Remove SO₂ 5. Remove O₂ 6. Remove SO₂

A: Equilibrium constant , k  remains constant as long as temperature is kept constant.

Q: Br NaOH DMF (H2O) а OH Br OH Ь OH OH d

A: This is an example of epoxide opening under basic condition followed by intramolecular SN2 reaction

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.