Use the following reaction to complete the following statements. 2Al + 3H2O2 + 6

Question

Use the following reaction to complete the following statements.

2Al + 3H2O2 + 6H(+) -> 2Al(3+) + 6H2O

Eocell = 3.46 V

Given the fact that______(a digit) moles of electrons are used in the above reaction, the corresponding free energy can be calculated plugging the following numbers in the expresion of the free energy in function of the cell potential: DGo =_____(a math operation sign) 6________(a unit symbol showing amounts of substance) x______(a number) J/(molxV)_____(a math operation sign)___________(a 4-character 3 digit number) V =________(a sign followed by a 6 digit number)_______

(a unit symbol). The reaction is_______(a 11-letter word starting with "s"), because its free energy is_______

(a 8-letter word with letter "g" inside).

Explanation / Answer

Answer –

We are given, reaction 2Al + 3H2O2 + 6H+ ---- -> 2Al3+ + 6H2O, Eocell = 3.46 V

From the above reaction –

In the above reaction there are 6 moles of electrons used.

We know formula for calculating free energy. Go = -nFEocell

Where n = number of moles of electrons used in the reaction , F = Faraday’s constant = 96485 C,

So , Go = - 6*96485 C * 3.46 V

                = 2.00*106 J

So we need to put the values, sign and mathematical operation for the filling the blanks

Given the fact that 6 (a digit) moles of electrons are used in the above reaction, the corresponding free energy can be calculated plugging the following numbers in the expresion of the free energy in function of the cell potential: DGo = - (a math operation sign) 6 moles (a unit symbol showing amounts of substance) x 96485 (a number) J/(molxV) x (a math operation sign) 3.46 (a 4-character 3 digit number) V = - 2003030 (a sign followed by a 6 digit number) J(a unit symbol). The reaction is spontaneous (a 11-letter word starting with "s"), because its free energy is negative

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