Recent questions in Chemistry

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What is the activation energy in Joules for a chemical reaction that has a rate constant of 2.7 x 10^-3 s^-1 and a temperature of 298 K? The activation energy can be calculated using the Arrhenius equation.

asked Mar 1 in Chemical reactions 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 activation energy of a reaction if its rate constant increases by a factor of 4 when the temperature is increased from 25°C to 50°C?

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

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What is the activation energy of the reaction between hydrochloric acid and zinc, given that the reaction rate constant at 25°C is 3.42 x 10^-3 s^-1 and the temperature coefficient is 1.99?

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

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What is the activation energy required for the chemical reaction between hydrogen gas and oxygen gas to form water? Given that the rate constant of the reaction is 5.62 x 10^-4 s^-1 at 298 K and the reaction has an overall order of 2.

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

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What is the activation energy required for the oxidation of tin in a solution of hydrochloric acid, given that the standard electrode potential for the Sn2+/Sn couple is -0.14 V and the rate constant for the reaction is 5.6 x 10^-3 molL^-1s^-1 at 25°C?

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

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What is the activation energy for the electrochemical reaction occurring between zinc and copper ions, given that the reaction has a rate constant of 1.5 x 10^-4 mol L^-1 s^-1 at 25°C and a rate constant of 6.2 x 10^-3 mol L^-1 s^-1 at 40°C?

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

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What is the activation energy for the electrochemical reaction between copper and zinc ions using a copper-zinc galvanic cell at 25°C and a potential difference of 1.8V?

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

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What is the activation energy required for the decomposition of hydrogen peroxide to water and oxygen at 25°C, given the rate constant of the reaction is 0.005 s⁻¹?

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

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What is the activation energy for a chemical reaction that has a rate constant of 2.5 × 10^-3 s^-1 at a temperature of 298 K, when the frequency factor is 5 × 10^13 s^-1?

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

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Sure, here's a problem for a chemistry student to solve:Calculate the acid dissociation constant (Ka) of a 0.1 M solution of acetic acid, given its pH is 3.7. The pKa value of acetic acid is 4.74.

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

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What are the specific skills and practical experiences that chemistry students need to acquire during their undergraduate studies, in order to be adequately prepared for chemistry-related careers in industry or academia?

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

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How can the synthesis reaction between magnesium and oxygen be balanced using the least whole number coefficients?

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

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What is the balanced redox reaction between potassium permanganate and oxalic acid in acidic medium?

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

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What is the balanced redox reaction for the reaction between permanganate ion (MnO4-) and hydrogen peroxide (H2O2) in an acidic solution?

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

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What is the balanced redox reaction when copper metal reacts with silver nitrate solution to form copper (II) nitrate and silver metal?

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

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What is the balanced redox equation for the reaction of potassium permanganate with iron(II) sulfate in acidic solution?

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

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What is the balanced redox equation for the reaction between potassium dichromate (K2Cr2O7) and ethanol (C2H5OH) in acidic medium? Calculate the oxidation number of chromium in the dichromate ion before and after the reaction.

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

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What is the balanced redox equation for the reaction between iron(II) chloride and potassium permanganate in acidic solution?

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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