Question

Урівняйте методом електронного балансу рівняння реакцій та вкажіть окисник і відновник S+KOH=K2S+K2SO3+H2O

Answer 1

S 0 -4e=S+4-восстановитель|
S 0 +2e=S 2- окислитель | 2
3S+6KOH=2K2S+K2SO3+3H2O

Answer 2

Balancing the Equation using the Electron Balance Method

To balance the given chemical equation using the electron balance method, we need to ensure that the number of electrons gained in the reduction half-reaction is equal to the number of electrons lost in the oxidation half-reaction. Let's break down the equation and balance it step by step.

The given unbalanced equation is:

S + KOH = K2S + K2SO3 + H2O

Balancing the Sulfur (S) Atoms

Looking at the equation, we can see that there is one sulfur (S) atom on the left side and three sulfur (S) atoms on the right side. To balance the sulfur atoms, we need to add a coefficient of 3 in front of the S on the left side:

3S + KOH = K2S + K2SO3 + H2O

Balancing the Oxygen (O) Atoms

Next, let's balance the oxygen (O) atoms. On the left side, we have 1 oxygen atom from KOH and 1 oxygen atom from H2O, giving us a total of 2 oxygen atoms. On the right side, we have 3 oxygen atoms from K2SO3. To balance the oxygen atoms, we need to add a coefficient of 1.5 in front of the KOH on the left side:

3S + 1.5KOH = K2S + K2SO3 + H2O

However, it is not ideal to have fractional coefficients in a balanced equation. To eliminate the fractional coefficient, we can multiply the entire equation by 2:

6S + 3KOH = 2K2S + 2K2SO3 + 2H2O

Balancing the Potassium (K) Atoms

Now, let's balance the potassium (K) atoms. On the left side, we have 3 potassium (K) atoms from KOH, and on the right side, we have 4 potassium (K) atoms from K2S and K2SO3. To balance the potassium atoms, we need to add a coefficient of 1 in front of the KOH on the left side:

6S + 4KOH = 2K2S + 2K2SO3 + 2H2O

Final Balanced Equation

After balancing all the elements, the final balanced equation using the electron balance method is:

6S + 4KOH = 2K2S + 2K2SO3 + 2H2O

Please note that this is the balanced equation based on the electron balance method. If you have any further questions, feel free to ask!