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vfiekz [6]
3 years ago
10

How many moles H2SO4 are needed to make 85 mL of .750 M solution?

Chemistry
1 answer:
grin007 [14]3 years ago
4 0

Answer:

0.06375 mole

Explanation:

The following data were obtained from the question:

Volume = 85mL

Molarity of H2SO4 = 0.750 M

Mole of H2SO4 =..?

Next, we'll convert 85mL to a value in L.

This is illustrated below:

1000mL = 1L

Therefore, 85mL = 85/1000 = 0.085L

Now, we can obtain the number of mole of H2SO4 as follow:

Molarity is simply defined as the mole of solute per unit litre of the solution i.e

Molarity = mole /Volume

Mole = Molarity x Volume

Mole of H2SO4 = 0.750 x 0.085

Mole of H2SO4 = 0.06375 mole

Therefore 0.06375 mole of H2SO4 is needed to make the solution

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2 years ago
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Nitric acid (HNO3) is a strong acid that is completely ionized in aqueous solutions of concentrations ranging from 1% to 10% (1.
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<u>Given:</u>

Concentration of HNO3 = 7.50 M

% dissociation of HNO3 = 33%

<u>To determine:</u>

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<u>Explanation:</u>

Based on the given data

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The dissociation equilibrium is-

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C          -2.48          +2.48              +2.48

E            5.02            2.48              2.48

Ka = [H+][NO3-]/HNO3 = (2.48)²/5.02 = 1.23

Ans: Ka for HNO3 = 1.23

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