Difference between desirable changes and undesirable changes
1 answer:
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Answer:
Concentration solution A was 0.5225 M
Explanation:
10.00 mL of solution A was diluted to 50.00 mL and yields 50.00 mL of solution B
According to laws of dilution-
where, and
are concentration of solution A and B respectively
and
are volumes of solution A and B respectively
Here = 0.1045 M,
= 50.00 mL and
= 10.00 mL
Hence,
So, concentration solution A was 0.5225 M
<u>Answer:</u>
2400 mL
<u>Explanation:</u>
According to this equation, the stoichiometric ratio between and
for the complete reaction is 1:2.
We know that the number of moles of can be calculated using the mole formula. (<em>number of moles = mass / molar mass</em>)
Moles of Calcium = = 1.5 mol
So the moles of =
= 3.0 mol
<em>Volume of HCl solution = Moles of HCl/ concentration of HCl</em>
Volume of HCl solution = = 2400 mL