Questions by MarcelinoLyl

0 votes

1 answer 48 views

Calculate the activation energy for the following electrochemical reaction: 2H₂O(l) → O₂(g) + 4H⁺(aq) + 4e⁻ if the half-cell potentials are: E°(O₂/H₂O) = 1.23 V E°(H⁺/H₂) = 0 V Assuming the reaction follows Arrhenius equation, where the rate constant k is related to the activation energy Ea, temperature T and pre-exponential factor A by: k = A exp(-Ea/RT) where R is the gas constant equal to 8.314 J/molK.

asked Jan 23 in ElectroChemistry

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1 answer 48 views

A battery consists of a Zinc electrode and a Copper electrode. Calculate the exchange current density at the Zinc electrode if the concentration of Zinc ion in its solution is 0.1 M and the potential difference between the electrodes is 1.5 V. The standard electrode potential for Zinc is -0.76 V and the transfer coefficient for the electrode reaction is 0.5.

asked Jan 22 in ElectroChemistry

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1 answer 7 views

What is the goal of qualitative research?

asked Jan 15 in Psychology

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1 answer 19 views

Who developed attachment theory?

asked Jan 13 in Psychology

0 votes

1 answer 24 views

What happens to the temperature of a system during phase change?

asked Jan 6 in Science

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1 answer 24 views

What do you call any force that makes something move in a circle?

asked Jan 6 in Science

0 votes

1 answer 53 views

What 2 things keep polar bears warm in their arctic ecosystem?

asked Jan 2 in Science

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