Inorganic Chemistry Answers

Q3

The EDTA -4 ligand is multidentste with the structural forma shown below. Four of the atoms which can bond to a metal ion are marked with crosses.

Questions

a) using crosses, indicate where two other atoms could bond to a metal ions when EDTA4- forms complexes .

Q3

The EDTA4- ligand is multidentate with the structural formula shown below. Four of the atoms which can bond to a metal ion are marked with crosses.

Questions:

a) using crosses, indicate where two other atoms could bond in metal ions when EDTA4- forms complexes( 2 marks)

b) explain the term multidentate ligand? (2 marks)

c) The EDTA4- ion reacts with metal(II) ions according to the equation shown below

(M(H2O)6)2+ + EDTA4- —> M(EDTA)2- + 6H2O

in a titration, using a suitable indicator, the following measurements were made:

A solution containing 0.0624 g of hydrated copper(II) sulphate reacted exactly with 25.00 cm3 of 0.0100 M EDTA 4- solution.

using the information, calculate the value of n in the formula of the hydrated copper(II) sulphate, CuSO4 . nH2O (6 marks)

Please top answers 🙏🏾

Q2

when cobalt (II) chloride is treated, under certain conditions, with bidentate ligand, NH2CH2CH2NH2, ( which can be represented by the symbol en), the compounds ( CoCI2(en)2) CI is formed.

questions

a) what is the oxidation state of cobalt in the compound formed?

b) what is the meaning of the term bidentate as applied to a king and?

state the co-ordination number of cobalt in this compound?

d) when this compound is treated with aqueous silver nitrate, explain why only a single mole of survey chloride is produced per mole of compound?

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Transition element

a) give the full electronic configuration of the copper atom ?

b) explain why some copper(I) are colourless yet most copper(II) compounds are coloured?

c ) complete the following electron configurations.

(I) Cu 1s2 2s2 2p6 3s2 3p6 ….

(II) Cu+2 1s2 2s2 2p6 3s2 3p6 ….

Q2

with the exception of argon, the period 3 elements form oxides.

a) write the equation to show the reaction of aluminium with oxigen.

b) This reaction occurs very readily. Suggest why saucepans made from aluminium can be safely heated on a gas cooker.

c) for the oxides of sodium , silicon, phosphorous and sulphur, state the physical state at 20 c(degree) and the type of bonding that occurs.

d) what is the equation for the reaction of sulphur dioxide with water?

e) Silicon dioxide and phosphorus (V) oxide are added to separate samples of pure water and each mixture is stirred. Estimate the pH value of each value.

(detailed answers please 🙏🏾 )

Write balanced equation to show the reaction of the filling with water:

(I) sodium

(I) sodium oxide

B) in terms of bonding, explain why sodium oxide reacts with water to fork a solution with a pH of 14.

C) what general type of oxide forms acidic solution in water? Give the formula of one such oxide.

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1. what is the capacity factor (k’) for compounds A and B (4 marks)

2. what is selectivity factor between peaks A and B (4 marks)

3. explain the influence of reducing the flowrate on selectivity factor (5 Marks)

4. Explain the separation between compound A and B as shown on the chromatograph (5

16 14 12 10 Detector response 8 6 4 2 0 0 10 20/ 40 50 60 70 30 Time, miń

The Liquid Chromatography column is 25 cm long. The flow rate was 0.40 ml/min.

Write a balanced equation for the combustion of acetaldehyde, CH₃CHO. When properly balanced, the equation indicates that ___ mole(s) of O₂ are required for each mole of CH₃CHO. 

Calculate the absolute temperature of 0.118 mol of a gas that occupies 10.0l at 0.933 atm

Ascorbic acid is a diprotic acid (Ka1 6.9x10-5) and (ka2 = 2.7x10-12). What is the pH of

a solution that contains 5.0 mg of acid per milliter solution.