describe the positive indications of the presence of a) CO3-2 ion b) SO4-2  c) PO4-3    d) Cl-  and e) I-, in an unknown sample.

Q: When lead (II) nitrate reacts with sodium iodide, sodium nitrate and lead (II) iodide are formed. Pb...

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Q: At 1120 K, AG° = 54.9 kJ/mol for the reaction 3 A (g) + B (g) →2 C (g). If the partial pressures of ...

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Q: The electron affinity of an element is typically defined as the energy change for the choose your an...

A: Electron affinity- the amount of energy liberated when an electron is added to a neutral atom to for...

Q: At this pH, calculate the concentration of each form of maleic acid in the solution at equilibrium. ...

A: Ans. The full question is:  A 100 ml.solution containing 0.927 gm of maleic acid is titrated with 0....

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Q: Select all reactions that are redox reactions. 5 Fe2+ (aq) + 8 H* (aq) + MnO4 (aq) --> 5 Fe3+ (aq) +...

A: Redox reaction is a reaction in which one specie get oxidize and other specie get reduced.That is re...

Q: Identify the strongest attractive force present in the pure substances shown: London forces, dipole-...

A: Ionic attraction : These type of interaction occur when there is ionic compound that have cation and...

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Q: Consider the elementary reaction equation K(g) + HCI(g) KCI(g) + H(g) > What is the order with respe...

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Q: A buffer solution is prepared by dissolving 1.51 g of NH3 (MM= 17.0, Kb= 1.8 x 10^-5) and 3.85 g of ...

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Q: O2(9) + F2(g) = F2O2(g) Expt # [F2] Rate (M/s) 0.1 1.00 x 10-4 0.8 0.2 5.00x10-5 2 0.1 0.1 1.25x10-5...

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Q: Calculate the pH when 45.0 mL of 0.200 M HBr is mixed with 50.0 mL of 0.400 M CH₃NH₂ (Kb = 4.4 × 10⁻...

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Q: Consider the following equilibrium: N,04 (g) - 2NO, (g) AG' = 5.4 kJ Now suppose a reaction vessel i...

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Q: Which of the following mixtures would result in a buffered solution when 1.0 L of each of the two so...

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Q: Industrially, hydrogen gas can be prepared by combining propane gas (C3H8) with steam at about 400 d...

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Q: The equilibrium constant for the reaction: CO2(g) CO(g) + 1/2 O2(g) is 6.66 × 1012 at 1000 K. Calcul...

A: Given- CO2->CO +1/2O2.                K=6.66×1012

Q: Consider the gas-phase hydration of hexafluoroacetone, (CF3)2CO: At 76oC, the forward and revers...

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Q: For a first-order reaction, which expression describes the relationship between the rate constant, k...

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Q: The equilibrium for a particular chemical reaction is dependent on the O a. atmospheric pressure. O ...

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Q: A 1.46 mol sample of CO2 gas is confined in a 34.0 liter container at 10.7 °C. If the amount of gas ...

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Q: When lead (II) nitrate reacts with sodium iodide, sodium nitrate and lead (II) iodide are formed. Pb...

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Q: Explain why different elements produce different spectral absorption and emission lines.

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Q: A0.55 M solution of HX, a weak acid, is made. a) Write the reaction of the acid in water and identif...

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Q: on. Give the pH to two decimal places.

A: Given, Concentration (C) = 2.30 M pKb (NH3) = 4.74 As it is salt of weak base-strong acid type salt.

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Q: . Determine the pH of an HCN/KCN buffer containing 0.10 mol HCN and o.070 mol KCN before and after t...

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Q: Consider an analyte solution of 50.0 mL of 0.050 M hydrochloric acid, HCl, titrated against 0.10 M s...

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Q: In a face-centered cubic lattice, how many atoms are contained in a unit cell?

A: Give : face centered cubic lattice

Q: Be sure to answer all parts. The interhalogen compound CIF3 reacts with NH3 to produce three product...

A: Molar mass of HF = 20.01 g/mol  Molar mass of N2= 14.01 g/mol  Molar mass of Cl2 = 70.9 g/mol 

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Q: ViS2 (s) = Vi** (aq) + 2S²-(aq) K. = 3.64 x 10-8 What is the concentration of Vi*(aq) in a solution ...

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Q: The reaction of peroxydisulfate ion (Sz0s-) with iodide ion (I ) is S,0g (aq) + 31 (aq) → 2S0,* (aq)...

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Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Samp...

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Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.