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5 February, 07:49

Write a balanced formation equation at standard conditions for the compound HI.

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  1. 5 February, 10:59
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    The compound HI (hydrogen iodide) is formed from the reaction of hydrogen (H2) with iodine (I2). The subscript 2 in hydrogen and iodine means that they exist as biatomic molecules. The reaction is therefore,

    H2 + I2 - - - > HI

    Balancing,

    H2 + I2 - - - > 2HI
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