Question

Помогите составить ОВР: 2) SO2+KIO3+H2O --> H2SO4+KI 3)S+HI --> I2+H2S

Answer 1

3SO2 + KIO3 + 3H2O --> 3H2SO4 + KI
S(4+) -2e -> S(6+) 3 в-ль
I(5+) +6e -> I(1-)  1 о-ль

S + 2HI --> I2 + H2S
S(0) +2e -> S(2-) 1 о-ль
2I(1-) -2e -> I2(0) 1 в-ль

Answer 2

Balancing Chemical Equations

To balance the given chemical equations, we'll follow the steps for balancing chemical equations.

Balancing the First Equation: SO2 + KIO3 + H2O -> H2SO4 + KI

The unbalanced chemical equation is: SO2 + KIO3 + H2O -> H2SO4 + KI

To balance this equation, we'll follow these steps:

1. Count the atoms of each element on both sides of the equation. 2. Start by balancing the most complex or uncommon compound. 3. Balance the elements one at a time by adding coefficients.

Balancing the equation: SO2 + KIO3 + H2O -> H2SO4 + KI

Step 1: Count the atoms of each element on both sides of the equation: - Sulfur (S): 1 on the left, 1 on the right - Oxygen (O): 7 on the left, 7 on the right - Hydrogen (H): 2 on the left, 2 on the right - Potassium (K): 1 on the left, 1 on the right - Iodine (I): 1 on the left, 1 on the right

Step 2: Start by balancing the most complex or uncommon compound. In this case, H2SO4 is the most complex.

Step 3: Balance the elements one at a time by adding coefficients. The balanced equation is: SO2 + 2KIO3 + 2H2O -> H2SO4 + 2KI

Balancing the Second Equation: S + HI -> I2 + H2S

The unbalanced chemical equation is: S + HI -> I2 + H2S

To balance this equation, we'll follow the same steps as before:

Balancing the equation: S + HI -> I2 + H2S

Step 1: Count the atoms of each element on both sides of the equation: - Sulfur (S): 1 on the left, 1 on the right - Hydrogen (H): 1 on the left, 2 on the right - Iodine (I): 1 on the left, 2 on the right

Step 2: Start by balancing the most complex or uncommon compound. In this case, I2 is the most complex.

Step 3: Balance the elements one at a time by adding coefficients. The balanced equation is: S + 2HI -> I2 + H2S