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grin007 [14]
3 years ago
14

What did Ernest Rutherford s gold foil experiment demonstrate about atoms?

Chemistry
1 answer:
Ghella [55]3 years ago
5 0
-Positively charged nucleus 
-Empty spaced
-Dense core
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A 35.0-ml sample of 0.20 m lioh is titrated with 0.25 m hcl. What is the ph of the solution after 23.0 ml of hcl have been added
kiruha [24]
<h3><u>Answer;</u></h3>

pH = 12.33

<h3><u>Explanation;</u></h3>

The equation of reaction is :

LiOH(aq) + HCl(aq) --> LiCl(aq) + H2O(l)

Reactants left after the titrant is added;

Total Moles LiOH;

= 0.035L LiOH × (0.2moles/L)

= 0.007moles of LiOH

Moles of HCl;

= 0.023L HCl × (0.25moles/L)

= 0.00575moles HCl is the limiting reagent

Reacting amount of moles of LiOH;

= 0.0575 moles HCl *(1mole LiOH/1moles HCl)

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Moles of LiOH left;

= 0.007moles total - 0.00575moles that react

= .00125 moles of LiOH (left)

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[LiOH] = [OH-] = 0.02155 M

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pOH = -log(0.02155)

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pH = 14 - pOH

pH = 14 - 1.67

pH = 12.33

7 0
3 years ago
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