Tara asked in Science & MathematicsChemistry · 2 months ago

How many grams of KCl will be formed from 5.5 grams of KClO3?

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  • 2 months ago

    we can use a simple mass ratio based on formula weights

    KCl / KClO3 = 74.55 / 122.55 = X / 5.5

    solve for X

    X = 3.3 g to 2 sig figs

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  • 2 months ago

    2KClO3 ---> 2KCl + 3O2

    2 moles of KClO3 gives 2 moles of KCl

    hence 147/(122) moles of KClO3 will give = 5.5g/122g moles of KCL = .045 moles

    KCl ( in grams) = .045 * 74 = 3.33 gm

    Hence 3.33 gm of KCl is produced.

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