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madam [21]
2 years ago
14

Which one of the following pair has the same number of ions?

Chemistry
2 answers:
vladimir1956 [14]2 years ago
8 0
Which one of the following pair has the same number of ions?

(c)1/2 mole of NaCl and 1/3 mole of MgCl3

Hope this helps!
zhuklara [117]2 years ago
6 0
Hahahaaaa none of the above but IF <span>(c) is
 
1/2 mole of NaCl and 1/3 mole of MgCl2 instead,

then C is the right ans :)</span>
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A common laboratory reaction is the neutralization of an acid with a base. When 31.8 mL of 0.500 M HCl at 25.0°C is added to 68.
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Answer:

The correct answer to the following question will be "90.6 kJ/mol".

Explanation:

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=450.35\times 3.2

=1441.12 \ J

The reaction will be:

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Going to look at just the amounts of reactions with the same concentrations, we notice that they're really comparable.  

Therefore, the moles generated by NaCl will indeed be:

=  (\frac{31.8}{1000} \ L)\times (0.500 \ M \ HCl/L)\times \frac{1 \ mol \ NaCl}{1 \ mol \ HCl}

=  0.0318\times 0.500

=  0.0159 \ mole  \ of \ NaCl

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=  \frac{1441.12 \ J}{0.0159 \ moles \ NaCl}

=  906364.7

=  90.6 \ KJ/mol \ NaCl

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