H2SO4 + 2HI ==> SO2 + 2H2O + I2
The above is the balanced molecula equation. Convert this to an ionic equation (strong acids, strong bases, soluble salts are written as the ions. Gases, liquids (H2O for example) insoluble materials are written as the molecule.)
Then cancel ions common to both sides to obain the net ionic equation.
Sulfuric acid reacts with hydrogen iodide to produce sulfur dioxide, iodine and water.
a) write total ionic equation
b)write net ionic equation
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