How to interpret a chemical equation in terms of moles to write mole-mole ratio posted on September 23, 2022 For example, when hydrogen (H2) reacts with iodine (I2) to produce hydrogen iodide (HI), we can write a balanced chemical equation for the reaction as: H2 + I2 --> 2HI. Now, let's …Continue Reading about How to interpret a chemical equation in terms of moles to write mole-mole ratio →