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The boiling point of standard water is 100 degree Celsius, with the addition of solute the boiling point is elevated. The freezing point of the solution will be -18.04 degree Celsius.
The boiling point is the temperature at which the liquid is converted to vapor. The change in boiling point of the aqueous solution gives the molality of the solution as:
The depression in freezing point from molality is given as;
The freezing point of aqueous water is zero degree Celsius. The freezing point of the solution will be:
The freezing point of the solution is -18.04 degree Celsius.
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Answer:
T°fussion of solution is -18°C
Explanation:
We have to involve two colligative properties to solve this. Let's imagine that the solute is non electrolytic, so i = 1
First of all, we apply boiling point elevation
ΔT = Kb . m . i
ΔT = Boiling T° of solution - Boiling T° of pure solvent
Kb = ebuliloscopic constant
105°C - 100° = 0.512 °C kg/mol . m . 1
5°C / 0.512 °C mol/kg = m
9.7 mol/kg = m
Now that we have the molality we can apply, the Freezing point depression.
ΔT = Kf . m . i
Kf = cryoscopic constant
0° - (T°fussion of solution) = 1.86 °C/m . 9.76 m . 1
- (1.86°C /m . 9.7 m) = T°fussion of solution
- 18°C = T°fussion of solution
Answer: Option (a) is correct.
Explanation:
When an object moves from its initial position, it acquires some energy. This energy is called kinetic energy, as it is governed by the motion of an object.
The formula to calculate kinetic energy is as follows.
kinetic energy =
where,
m = mass of object
v = velocity of object
Thus, it is concluded that kinetic energy is the energy an object has due to its motion.
(2) hydrogen ion (4) hydroxide ion
An Arrhenius base yields hydroxide ion as the only negative ion in an aqueous solution.
This is defined as a substance which dissociates in water to form hydroxide (OH–) ions.
The hydroxide ion formed from the aqueoussolution is the only negative ion which is why option 4 was chosen.
Read more about Arrhenius base here brainly.com/question/1303158
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Arrhenius bases are substances which produces hydroxide ions in solution. The only negative ion in an aqueous solution is the hydroxide ion. The answer is number 4.