It is desired to assemble a concentration cell with a potential of 120 mV with two Zn(s) electrodes immersed, each one, in a ZnSO4 solution. What should be the ratio between Zn2+ activities in the two electrodes to reach the desired potential?

Q: A chemistry student needs 50.0 g of glycerol for an experiment. By consulting the CRC Handbook of…

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Q: Describe Hess's Law in your own words and include an example.

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Q: inc metal reacts with hydrochloric acid according to the following balanced equation.…

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Q: 6. If 4.00 moles of a gas at a pressure of 5.4 atmospheres have a volume of 120.0 liters, what is…

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Q: An organic compound contains 66.6% carbon, 11.1% hydrogen 22.3% oxygen (m/z = 72). In UV, it gave a…

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Q: Reaction 1: H₂(g) + Cl₂(g) ->> 2HCl(g) AH = -184.6 kJ Reaction 2: 20F2(g) O2(g) + 2 F2 (g) AH =…

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Q: A chemist adds 925.0 mL of a 23.1 g/dL nickel(II) chloride (NiC1₂) solution to a flask. Calculate…

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Q: The equilibrium constant for the following reaction is 14.3. If the equilibrium concentration of O2…

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Q: la OH NH₂ "NH₂ H₂N OH

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Q: 3. A welder needs 5.00 x 103L of oxygen gas at 1.50 x 102 kPa at a of 21.0 °C. To what pressure must…

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Q: 9. A small 2.0-g candle is consumed in heating 100 g of water from 25°C to 75°C. If you ignore loss…

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Q: A container that can hold 5805 grams of mercury can hold only 685 grams of carbon tetrachloride.…

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Q: 8. Which of the following are synthetic polymers? a. polyamide b. rubber c. Kevlar d. all of the…

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Q: Ka=2.5 x 10-7 , than pKa is

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Q: What is the skeleton equation for the decomposition of nitrogen trihydride?

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Q: Which is the limiting reagent if 3.5 moles of copper chloride (CuCl₂) react with 8.0 moles of sodium…

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Q: In a reaction, 1.0 mol of Zinc reacts with 1.0 mol HCl and all the reactants are used up. In the…

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Q: A solution will always have 2 limiting reactants. O True False

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Q: 5. An unknown monatomic gas X has a density of 5.37 g/L at 25.0 °C and 101.3 kPa. Calculate the…

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Q: A brick has a mass of 4,0 kg and the Earth has a mass of 6.0 × 1027 g. Use this information to…

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Q: What is the molecular formula of the following compound? Please write your answer using this format:…

A: •Q.1)=>

Q: 6. Assign a correct set of four quantum numbers for the circled electrons in these orbital diagrams.…

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Q: From

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Q: 1 Transmittance (%) 60 40 20 0 A- FTIR spectrum 4000 3500 5.10 5.0 5.05 3000 4.5 ppm 2500 4.0 2000…

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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.