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2 years ago

How much iodine (I2), in grams, should be added to water to produce 2.5L of solution with a molarity of 0.56M?

Chemistry

1 answer:

denis-greek [22]2 years ago

7 0

Molarity=Moles of solute/Volume of solution in L

0.56M=moles/2.5L
moles=0.56(2.5)
moles of Iodine=1.4mol

Mads of Iodine

Moles(Molar mass)
1.4(126.9)
177.66g

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Step 1.

Write and balance the equation for the decomposition of KClO3 with heat (∆). 2KClO3 + ∆ → 2KCl + 3O2

Step 2.

Convert what you have (in this case g KClO3) to moles.

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Step 3.

Using the coefficients in the balanced equation, convert moles of what you have (moles KClO3) to moles of what you want (in this case moles oxygen).

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Convert moles from step 3 to grams.

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