A voltaic cell operating under standard conditions (1.0 M ion concentrations) utilizes the following reaction: 3 Pb(s) + 2 Co3+(aq)  3 Pb2+(aq) + 2 Co(s)   What is the effect on the cell emf of each of the following changes: a)  A solution of 1.0 M Pb(NO3)2 is added to the anode compartment. __The positive cell emf rises, becoming more positive. __The positive cell emf drops closer to zero.     __The negative cell emf rises closer to zero. __The negative cell emf drops, becoming more negative. __No change in cell emf occurs. b)Some Na2S is added to the Pb2+ compartment, precipitating some Pb2+ as lead sulfide. ___The positive cell emf rises, becoming more positive. ___The positive cell emf drops closer to zero.     ___The negative cell emf rises closer to zero. ___The negative cell emf drops, becoming more negative. ___No change in cell emf occurs.

Q: Discuss the chemistry involved in Fe(H₂O) with H₂PO4

A:

Q: If you were designing a chemical cold pack, which of the following salts would you choose to provide…

A:

Q: Determine the pH of each of the following solutions.

A: Given : concentration of weak acid and base.  tip : pH = -log[H+]

Q: Draw the Lewis dot diagram for a H* cation.

A: H+ is called hydrogen ion.This is formed when hydrogen atom lost an electron. Hydrogen atom has only…

Q: Consider two 5 L chambers. In one, there are 5.00 g 0₂, and in the other there are 5.00 g He. Which…

A:

Q: 1. A chem 101 student dissolves 10.6 g of hydrosulfuric acid (H₂S) in 120 mL of water. Calculate the…

A: Mass of H2S = 10.6 g  Volume of water = 120 mL or  = 0.120 L

Q: 3. Dr. Dahm wants to make 650 mL of a solution that has a pH of 4.3. If he is working with…

A:

Q: 5. The following compound reacts with sodium hydride in THF to give a stereoselective reaction in…

A:

Q: Consider the reaction N₂(g) + 3H₂(g) 2NH3(g) Use the standard thermodynamic data in the tables…

A:

Q: Without doing any calculations, match the following thermodynamic properties with their appropriate…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: You want to boil 1500.0 g water that is initially at 15.0 °C. You raise its temperature to 100.0 °C,…

A: Given :  Initial temperature of water = 15.0 °C  Final temperature of water = 100.0 °C  Mass of…

Q: Barium hydroxide, Ba(OH)2, dissolves in water to the extent of 18.5 g per liter. What is the value…

A: Given: The solubility of Ba(OH)2 in water = 18.5 g per liter We have to find the value of Ksp for…

Q: 3 サ + CH Cla AICIS 6

A: Given : structure of reactant Tip : friedal craft alkylation

Q: 1. How much heat must be absorbed by 'x' grams of water to raise its temperature from 28.0°C to…

A: It is the amount of energy required to raise the temperature of substance to unit degree is defined…

Q: Consider the reaction: 2H₂(g) + O2(g) → 2H₂O(g) Using standard absolute entropies at 298 K,…

A:

Q: 2) Find the energy required to ionize a ground state hydrogen atom. That is, what is the energy…

A: As per bartleyby guidelines i answered only first question so please don't mind. Thanks in advance.

Q: 6. What is the major product expected from the following reaction? HC (g) CH3-CEC-H (a) CH3-C=CH₂ C1…

A:

Q: Helium-neon (HeNe) lasers contain a low-pressure mixture of He and Ne gases. speed of He atoms than…

A:

Q: A bomb calorimeter, immersed in 650.0 grams of water, has a heat capacity of 628 J/°C. When we burn…

A:

Q: For each row in the table below, decide whether the pair of elements will form a molecular compound…

A: We have to fill the given table

Q: 2.00 4.11 6.24 4.09 2.10 10 9 8 7 5 3 2 1 ppm 7.76 7.47 7.44 6.95 6.92 3.84 2.92 1.80

A: Aromatic protons - aromatic protons gives peak around 6.5 ppm to 8 ppm. Alkene protons - alkene…

Q: propose a suitable synthesis...

A: In this question, we will propose a suitable synthesis for this transformation from starting…

Q: A buffer solution contains 0.50 mol of hydrazoic acid (HN3) and 0.62 mol of sodium hydrazoate (NaN3)…

A: This problem is solved on basis of Handerson-Hassalbalch equation

Q: Enamines can serve as enolate surrogates in reactions at the a-carbon. In the reaction sequence, the…

A: The given reaction can be explained as :

Q: Give an example of a reaction that represents the heat of formation?

A:

Q: 1) Consider the Bohr Model and the Quantum Mechanical Model. a) What part(s) of the Bohr model are…

A: Parts of Bohr model that is present in Quantum mechanical model:  1) Both the above models describe…

Q: How many grams of solid sodium fluoride should be added to 2.00 L of a 0.175 M hydrofluoric acid…

A: Given - Volume= 2.00L  Concentration of hydrofluoric= 0.175M  pH=2.271 Ka(HF)=7.20×10-4 Mass=?

Q: i need the answer ASAP!!!! what is the name for 4 and 5?

A: Introduction: CoA in the given structure means Coenzyme A. IUPAC nomenclature can be incorporated as…

Q: 1. HgOAC₂, H₂O 2. NaBH4

A: Oxymercuration reaction: Hydration of alkene proceeds by an electrophilic addition reaction…

Q: The X-ray is likely from element (e.g. Ag) and is line type (e.g. Ka)

A: X Rays are those Electromagnetic waves which have highest frequency and energy after gamma rays in…

Q: 4. Using the phase diagram to the right: wod. abom en Label each phase in the diagram to the right…

A:

Q: 8. Consider the cell Fe(s) FeSO.(ag) Hg.SO.(1) Hg() Write the half-cell reactions and the full cell…

A: Formulae used:  E°cell = E°cathode  - E°anode  deltaG° = - RTlnK  delta G° = -nFE°cell  T = 298 K  R…

Q: Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure [H- N-O-a:…

A:

Q: Identify each of the following pairs of Fischer projections as enantiomers or identical compounds.…

A: We have to first confirm whether the pairs are mirror images of each other or not. And we have find…

Q: How grams of C4H8 is needed to completed 30.00 Liter of oxygen gas

A: Combustion reaction of butene is as follows: C4H8 (g) + 6 O2 (g) →4 CO2 (g) +4 H2O (g) From the…

Q: Choose all of the statements from below which are true about oxidation and reduction. Oxidation and…

A:

Q: Which of the following enols will convert to the ketone on the right upon treatment with acid?

A: Given : structure of product

Q: Use the data given in the table to calculate the value of AGxn at 25° C for the reaction described…

A:

Q: provide a suitable synthesis for the following transformation

A: In this question, we will give a suitable synthesis for the given transformation.  You can use these…

Q: 3) What is the charge of the cation in MnO₂?

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we…

Q: A student determines the value of the equilibrium constant to be 6.41 x 10³ for the following…

A:

Q: 4. Draw the complete Lewis structures showing all valence electrons, all atoms, all charges, all…

A: we have to draw the Lewis structures of given compounds

Q: QUESTION 6 How many grams of H 2 are needed to reduce 5.43 moles of CuO in the reaction CuO + H₂ Cu…

A:

Q: QUESTION 5 How many grams of NaCl are needed if we want to make 6.688 moles of AgCl by the reaction…

A:

Q: Starting from the following alkyne, which products will be obtained upon the action by the following…

A: To solve this problem we have to complete the given reaction .

Q: SOH SOCI2 H2O, H+ EtOH, H Да CI Дон

A:

Q: 2-pentanone has a retention index of 987 on a poly(ethylene glycol) column (also called Carbowax).…

A: Given: 2-pentanone has a retention index of 987 on a poly(ethylene glycol) column (also called…

Q: The melting temperature of TNT (2,4,6-trinitrotoluene) is 80.83 °C, and its enthalpy change of…

A: Enthalpy change of fusion, ∆Hfus = 21.23 kJ/mol = 21230 J/mol (1000 J = 1 kJ) Melting point of TNT,…

Q: (a) Select all of the correct statements about the relative acid strengths of pairs of acids from…

A: The strength of the acid can be determined by the stability of the conjugate base after the donation…

Q: When a 30.0 mL sample of a 0.419 M aqueous hydrofluoric acid solution is titrated with a 0.404 M…

A: