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Asked Aug 30, 2019
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1-23. The density of 70.5 wt% aqueous perchloric acid is 1.67 g/mL
Recall that grams refer to grams of solution (= g HCIO4 g H2O)
|(a) How many grams of solution are in 1.000 L?
|(b) How many grams of HCIO4 are in 1.000 L?
(c) How many moles of HCIO4 are in 1.000 L?
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1-23. The density of 70.5 wt% aqueous perchloric acid is 1.67 g/mL Recall that grams refer to grams of solution (= g HCIO4 g H2O) |(a) How many grams of solution are in 1.000 L? |(b) How many grams of HCIO4 are in 1.000 L? (c) How many moles of HCIO4 are in 1.000 L?

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Expert Answer

Step 1

Density is a physical quantity that can be determined with the help of the mass and volume of the given substance.

The formula of the density of any substance can be written as:

mass
Density olume
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mass Density olume

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Step 2

a) Calculate the mass of solution in 1.000 L

    Density of solution = 1.67 g/mL 

            1.000 L  =  1000 mL

Hence the mass of 1.000 L solution: 

Mass of 1 mL solution = 1.67 g
1.67 g x 1000mL = 1.67x105 g
Mass of 1000 mL or 1.000 L solution = 1 mL|
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Mass of 1 mL solution = 1.67 g 1.67 g x 1000mL = 1.67x105 g Mass of 1000 mL or 1.000 L solution = 1 mL|

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Step 3

b)  Calculate the mass of acid in 1.000 L of solution:

Weight percent of a solute is equal to the mass of the solute divided by the t...

100 g of solution contains 70.5 g of HCI04
70.5 g HCIO
So 1.67 x 10 g of solution will have - 100 g solutionx 1.67 x10* g of solution = 1.18x103 g HC10,
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100 g of solution contains 70.5 g of HCI04 70.5 g HCIO So 1.67 x 10 g of solution will have - 100 g solutionx 1.67 x10* g of solution = 1.18x103 g HC10,

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