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What is the molar mass of sodium chloride (NaCl)? Show step-by-step calculations in determining the answer.

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the activation energy for the oxidation of copper in a 1 M copper sulfate solution with a standard reduction potential of +0.34 V at 298 K, given that the exchange current density is 5.6 x 10^-6 Acm^-2 and the reaction order is unity?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the formal charge of the chlorine atom in the molecule ClO2? Show your calculations.

asked Mar 1 in Chemical bonding by TheScientist (138k points)

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What is the activation energy for the electrochemical reaction that occurs when zinc metal is oxidized to form Zn2+ ions in a solution containing HCl? Calculate the activation energy at 25°C from the experimental data obtained from the Tafel plot.

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the activation energy of the following reaction at room temperature?2NO(g) + Cl2(g) → 2NOCl(g)The rate constant of the reaction is 0.00313 L mol^-1 s^-1 at 25°C and increases to 0.05012 L mol^-1 s^-1 at 35°C.

asked Mar 1 in Chemical kinetics by TheScientist (138k points)

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What is the change in enthalpy (ΔH) for the combustion of 10 grams of methane (CH4) at standard conditions, given the following balanced equation: CH4 + 2O2 → CO2 + 2H2O?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What is the rate of reaction when 2 mol of hydrogen gas (H2) react with 1 mol of oxygen gas (O2) to form 2 mol of water (H2O) in 10 minutes at a constant temperature and pressure of 1 atm?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What is the theoretical yield of acetylsalicylic acid that can be produced from 5 grams of salicylic acid and an excess amount of acetic anhydride in the synthesis process, assuming 100% conversion and purity of the reaction?

asked Mar 1 in Chemical synthesis by TheScientist (138k points)

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How does the variation in pH affect the rate of photochemical reactions in a certain chemical reaction involving light and a given set of reactants?

asked Feb 28 in PhotoChemistry by TheScientist (138k points)

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What is the efficiency of an electrochemical cell with a standard potential of 1.5V when the measured potential is 1.2V and the current passing through the cell is 0.5A for 2 hours? (Assume the cell is operating under standard conditions.)

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the change in enthalpy and entropy for the reaction of 2 moles of sodium hydroxide with 1 mole of sulfuric acid to form 2 moles of water and 1 mole of sodium sulfate, assuming standard conditions?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the rate of diffusion of oxygen through a 2 cm thick slab of air at 25°C and 1 atm pressure? The diffusivity of oxygen is 0.20 cm^2/s.

asked Mar 1 in Physical Chemistry by TheScientist (138k points)

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Sure, here's a problem for you:Consider the following reaction: N2 (g) + 3 H2 (g) ⇌ 2 NH3 (g)If the equilibrium concentrations of N2, H2 and NH3 are 0.25 M, 0.75 M and 0.50 M, respectively, calculate the equilibrium constant (Kc) for the reaction.

asked Mar 1 in Chemical equilibrium by TheScientist (138k points)

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What is the corrosion rate of a zinc electrode coupled to a copper electrode in a 0.1 M aqueous solution of NaCl if the galvanic couple has a potential of 0.8 V and a surface area of 4 cm² for the zinc electrode?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the bond energy (in kJ/mol) required to break apart a single molecule of methane (CH4) into its individual atoms (C and 4H)?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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What is the balanced half-reaction for the oxidation of ethanol (C2H5OH) to acetic acid (CH3COOH) and what is the oxidation state change of carbon in this reaction?

asked Mar 1 in Organic Chemistry by TheScientist (138k points)

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What is the lattice energy of sodium chloride (NaCl) given that the distance between the sodium and chloride ions is 2.82 Å and the charges on the ions are +1 and -1 respectively?

asked Mar 1 in Inorganic Chemistry by TheScientist (138k points)

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What is the corrosion rate of a copper metal in a saline environment containing 0.5 M of NaCl solution, if the mass of the copper electrode decreases by 0.5 grams after 24 hours of exposure to the solution at room temperature (25 °C)?

asked Mar 1 in ElectroChemistry by TheScientist (138k points)

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What is the bond energy (in kJ/mol) of the covalent bond between the carbon and oxygen atoms in carbon dioxide (CO2), given that the bond length is 116.3 pm?

asked Mar 1 in Chemical reactions by TheScientist (138k points)

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Please name the two most common methods to prepare primary alcohols from aldehydes and describe the reaction mechanism for one of them.

asked Feb 28 in Organic Chemistry by TheScientist (138k points)

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