2 years ago

Plz HELP, Its The Nature of Oxidation and Reduction for chemistry

Chemistry

1 answer:

liraira [26]2 years ago

4 0

Answer:

What that person said

Explanation:

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How does a catalyst affect the activation energy of a chemical reaction?

FromTheMoon [43]

It lowers the activation energy.

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3 years ago

Convert the pressure 1.30 atm to kPa

Karo-lina-s [1.5K]

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Part a the disproportionation of mn2+(aq) to mn(s) and mno2(s) in acid solution at 25 ∘c. calculate δg∘rxn.

ollegr [7]

Answer:

Δ $G^{o}$ = -461198.3 J

Explanation:

Gibbs free energy is defined as the energy associated with a given chemical reaction which can be used to do work. Firstly, we need to figure out the chemical equation for the given problem. For the given problem, the chemical equation is:

$Mn^{2+} _{(aq)} + 2e^{-}$ ⇒ $Mn_{(s)}$ $E^{o} = -1.18 V$

$Mn^{2+} _{(aq)} + H_{2}O$ ⇒ $MnO_{2(s)} +4H^{+} + 2e^{-}$ $E^{o} = -1.21 V$

The addition of the two $E^{o}$ gives the $E_{cell}$ of the equation, i.e. -1.18-1.21 = -2.39 V.

Then, using the equation for Δ $G^{o}$ , we have:

Δ $G^{o}$ = n*F* $E^{o}$ = 2*96485*-2.39 = -461198.3 J

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3 years ago

Which of the following is a result of a change in pressure?

ohaa [14]

Frost Wedging,i m sure this is the answer.

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2 years ago

The water for the pan is not saturated with co2. will the reported percent caco3 in the original sample be too high, too low, or

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3 years ago