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10 September, 13:46

An unknown substance in aqueous solution is treated with various reagents including hexane, a colorless liquid less dense than water. The test tube is stoppered and shaken. The upper layer remains colorless. name two nometal species that cannot be present in the unknown

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  1. 10 September, 15:07
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    Chlorine and bromine

    Explanation:

    The chlorine and bromine in the answer may in form of chlorine water solution or bromine water solution.

    When halogen generally are tested with hexane, it gives a characteristic colour. The color of chlorine is yellowish green. But with a greenish tinge and the color of bromine reddish but with an orange tinge. Iodine gives violent colour.
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