Question #6a10d
1 Answer
See explanation.
Explanation:
The underlying principle of a dilution is that the number of moles of solute remains unchanged.
In this regard, a dilution reduces the concentration of a solution by increasing its volume while keeping the number of moles of solute constant.
In this case, sample
So, let's say that sample
To get sample
#V_"B" = 10 * V_"A"" " " "color(orange)("(*)")#
If you start with the initial volume of sample
Since the number of moles of solute is constant, you will have
#c_"A" = n/V_"A" -># for sample#"A"#
#c_"B" = n/V_"B" -># for sample#"B"#
But you know that you can use
#c_"B" = n/(10 * V_"A")#
Since
#n = c_"A" * V_"A"#
you will get that
#c_"B" = (c_"A" * color(red)(cancel(color(black)(V_"A"))))/(10 * color(red)(cancel(color(black)(V_"A")))) = c_"A" / 10#
Therefore, you can say that the concentration of solution