What is the percent by mass of the solution formed when 5.0 g of solute is dissolved in 40. g of water
1 answer:
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Answer: 1 molecule of reacts with 1 molecule of
to give 2 molecules of HCl.
1 mole of reacts with 1 mole of
to give 2 moles of HCl.
Explanation:
The given balanced reaction is:
On the particulate level :
1 molecule of reacts with 1 molecule of
to give 2 molecules of HCl.
On molar level:
1 mole of reacts with 1 mole of
to give 2 moles of HCl.
The new volume of the dilute solution is 0.33 L.
<u>Explanation:</u>
Using the law of Volumetric analysis, we can find the volume of the dilute solution from the stock solution or the concentrated solution of Calcium Chloride.
V1M1 = V2M2
V1 be the volume of the stock solution = 0.25 L
M1 being the molarity of the stock solution = 0.98 M
V2 be the volume of the dilute solution = ?
M2 being the molarity of the dilute solution = 0.74 M
We have to rearrange the above equation to find V2 as,
V2 =
Now plugin the values as,
V2 =
= 0.33 L
So the new volume of the dilute solution is 0.33 L.
Answer: The freezing point of a 0.765 m solution of nitrobenzene in naphthalene is
Explanation:
Depression in freezing point is given by:
= Depression in freezing point
i= vant hoff factor = 1 (for non electrolyte such as nitrobenzene)
= freezing point constant =
m= molality = 0.765
Thus the freezing point of a 0.765 m solution of nitrobenzene in naphthalene is