How does  14Si have the same valence of 126C ?

Q: Determine the pH of a 0.20 M solution of RbNO2 at 25 °C. Kb for RbOH = 2.5 x 10¹ Ka for HNO₂ = 7.2 x…

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Q: For the reaction below, the DH° = -113.1 kJ/ %3D mol and DS° = -145.3 J/K-mol. Calculate the…

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Q: How many of carbons 2p orbitals are left unhybridized in CO2? 2.

A: To determine the number of unhybridized 2p orbitals of C in CO2

Q: Based on its molecular orbital diagram, is peroxide ion O22-  paramagnetic or diamagnetic?

A: Given,  Based on its molecular orbital diagram, is peroxide ion O22-  paramagnetic or diamagnetic ?

Q: clays undergo isomorphous substitution resulting in a permanent net charge. O 1:1; positive 1:1 ;…

A: Clay:  1. Clay is a mineral in soils belong to the phyllosilicates group. 2. It occurs in small size…

Q: What are the physical properties of tris (butadiene) molybdenum?

A: Answer: The physical properties of tris (butadiene) molybdenum is as follows.

Q: What is the pH of 1.5M solution of H2SO4?

A: pH is a measure of strength of H+ ion concentration in a solution. It can be calculated as: pH  =…

Q: identify the compound with the standard free energy of formation zero  C (g) N (g) O2 (g) O3(g)…

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Q: ntify the type of reaction for the che ation shown: + 2BCI3 3CaCl2 + B

A: The question is based on concept of chemical reaction. we have to identify what kind of reaction is…

Q: Define d ―p bonding. ii. Why C≡N¯ can accept the electron from the d orbital in metal central?

A: i) dπ - pπ bonding = It is a special kind of bonding in which, electrons are donated from filled p…

Q: Which of the following is the structure of oxalic acid? HO. HO. HO. HO. HO. II II IV B) I| OA)I O D)…

A: Answer  The stracture of oxalic acid(C2H2O4) is

Q: What role is played by CO2 in getting pure alumina (A1l2O3) in the extraction of aluminium?

A: Extraction of metals: As metals are found in mines in combined state in ores. It is necessary to…

Q: Which of the following phosphorus compounds will be the softest base? Select one: a. P(CH3)3 b.…

A: Hard and soft acid and base concept of Pearson states that soft base are compounds having lower…

Q: How are the silica tetrahedrons linked for CaSiO3 ? Which class of silicates does this compound…

A: The given compound CaSiO3 is example of pyroxene. The main formula unit in it is SiO32-. The ionic…

Q: What is the pH of a 0.237 solution of sodium hypobromite (NaOBr)? The Ka of hypobromous acid is 2.24…

A: Ka for HBrO , Ka = 2.24 × 10-9  Kb = 10-14 / 2.24 × 10-9 = 4.46 × 10-6  NaOBr ---> Na+ + OBr-

Q: Identify the compound with the standard free  energy of formation equal to zero.  A. CO B. It is…

A: Standard free energy of formation is the change in the Gibbs energy of the reaction for the…

Q: Please draw the structure of the possible product for the following reaction, and how does the…

A: You have a Wilkinson's catalyst which is used for the hydrogenation of alkene molecule.

Q: What is the charge (oxidation state) of the cation in Hg2O?

A: In a neutral compound, the number of positive charges on a cation is equal to the number of negative…

Q: What is the pH of a 0.05 M solution of CdSO4 if the KA value for [Cd(H2O)n] 2+ is 3x10-9 ? b. Write…

A: To calculate the PH, first step is to calculate Pka

Q: An aqueous solution of an unknown solute is tested with litmus paper and found to be acidic. The…

A: An aqueous solution of an unknown solute is tested with litmus paper and found to be acidic so we…

Q: Write the synthesis and important reactions of Ferrocene

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Q: How are the acetates bound to copper in [Cu(OAc)2(H2O)]2 ?

A: We have to tell about the bonding of acetate with copper in given complex

Q: What is the best synthesis and purification method with regards to cobalt(II) sulphate (CoSO4.7H2O)

A: Cobalt(II) sulphate can be synthesized by the reaction of cobalt metal with aqueous solution of…

Q: Metal oxides tend to be basic and react with acids True or False?

A: Given statement,           Metal oxides tend to be basic and react with acids

Q: E°cell =    1.9791 ΔG° =    -381.91 What is K?

A: The relationship between the E0cell and equilibrium constant is given by  RTln(K) = nFE0cell  where…

Q: Cell Notation H5XO6/XO3* XO3/ XO- XO3/X2 XO/X2 H5XO6/X* X₂/X- E° (V) +1.63 +1.16 A +1.49 B +1.57

A: Here we have to find E° reduction of the following species A and B from the given data.  Here…

Q: what are interhalogen compounds ?

A: Interhalogen compounds are the compounds that contain an atom from halogen family only. It is…

Q: Can Ag+ , Pb2+ and Hg22+ be separated if ammonia is first added to an aqueous mixture of these three…

A: Ag+, pb2+ , and Hg22+ are group 1 cations. These cations produce insoluble chlorides so  that they…

Q: 1. What are the synthesis methods of cobalt(II) sulphate.

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Find the pH of a 0.381 M aqueous solution of hypobromous acid (HOBr), for which Ka = 2.1 * 10-⁹.…

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Q: d (h.s) d' (L.s) Explain which of the electronic configurations in the octahedral field show the EPR…

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Q: What is the enthalpy value of the reaction 2Pd + O2 = 2PdO?

A: As per our company guidelines we are supposed to answer only one question. Kindly repost other…

Q: N N No No +) OR? R1 R2 R1* A B

A: Diazonium salt is very unstable. They contains N2^+. They will produce secondary carbocation after…

Q: When a mixture containing cations of Analytical Groups I–III is treated with H 2S in acidic…

A: We have to predict which cation from group 1-3 will precipitate on adding H2S.

Q: 4. In the reaction below, what is the oxidation state change in each atom involved? What is the…

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Q: Give reason 2 a) PCl5 acts as an oxidising agent. b) Dinitrogen is chemically inert

A: If the compound itself try to reduce then it will oxidise other . If the compound oxidise other…

Q: Which one of the following is the most basic oxide? a. Bi2O3 b. N2O3 c. P4O6 d. As4O6

A: The oxides of the metals are basic in nature and the oxides of nonmetals are acidic in nature.

Q: Which of the following compounds would react with acidified potassium dichromate solution on…

A: Acidified potassium dichromate(VI) works as an oxidizing agent. It oxidizes: Primary alcohols…

Q: 17. The colour change that would occur when V2O5 is changed to VH2 is O yellow to purple O green to…

A: 17. V5+ = yellow V2+ = purple The colour change is yellow to purple.

Q: (A) (B) SiO3²-or SO3²-

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Q: Determine the molecularity of the following reaction: A + 2B → products

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Q: (b) oxidizes Al to Al³+ but does not oxidize Sn to Sn²+ Mg2+ Zn²+ Ca2+ Cd²+ NO3 VO₂+

A: we have to determine which of the given species can oxidize Al but not Sn

Q: H Diethyl tartarate Titanium isopropoxide, 8.

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Q: A 0.100 M solution of nitrous acid (HNO2) had a pH of 2.074. What is the Ka value for nitrous acid.

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Analytical Tools

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