All categories

3 years ago

How will you know whether the crystallization point is reached

Chemistry

2 answers:

vodka [1.7K]3 years ago

8 0

Answer:

Explanation:

crystallization The crystallization temperature of a brine is the temperature at which a solid phase begins to form, resulting in a mixture of solid particles and solution. These solids may be salt crystals or water crystals (ice). It is the point at which the minimumcrystallization temperature can be realized

Ganezh [65]3 years ago

5 0

Answer:

Place a glass rod in the solution, if the crystallisation point has been reached, you should notice small crystals formed on it.

You might be interested in

If the reaction of 3.50 moles of lithium with excess hydrofluoric acid produced a 75.5% yield of hydrogen gas, what was the actu

melomori [17]

Answer: The correct answer is 1.32 mol $H_2$

Explanation:

For the reaction of lithium and hydrofluoric acid, the equation follows:

$2Li+2HF\rightarrow 2LiF+H_2$

By Stoichiometry of the reaction:

if 2 moles of lithium is producing 1 mole of hydrogen gas,

Then, 3.50 moles of lithium will produce = $\frac{1}{2}\times 3.5=1.75mol$ of hydrogen gas.

Now, to know the theoretical yield of hydrogen gas, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ...(1)

Moles of hydrogen gas = 1.75 mol

Molar mass of hydrogen gas = 2 g/mol

Putting values in above equation, we get:

$1.75mol=\frac{\text{Mass of hydrogen gas}}{2g/mol}\\\\\text{Given mass of hydrogen gas}=3.5gl$

To calculate the percentage yield, we use the equation:

$\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Percentage yield = 75.5 %

Theoretical yield = 3.5 g

Putting values in above equation, we get:

$75.5=\frac{\text{actual yield}}{3.5g}\times 100\\\\\text{Actual yield}=2.64g$

Now, calculating the moles of hydrogen gas, we put the value in equation 1, we get:

$\text{Moles of hydrogen gas produced}=\frac{2.64g}{2g/mol}=1.32mol$

Hence, the correct answer is 1.32 mol $H_2$

5 0

3 years ago

Read 2 more answers

Identify the number of significant figures in each value. 147,320 g

Sidana [21]

There are 5 significant figures in 147,320.

4 0

3 years ago

Read 2 more answers

How many elections are in nitride

romanna [79]

Answer:

The are 10 electrons in nitride

4 0

3 years ago

How much thermal energy is in 100 grams of water at 50 degrees Celsius

Ymorist [56]

when the thermal energy is the energy contained within a system that is responsible for its temperature.

and when the thermal energy is can be determined by this formula:

q = M * C *ΔT

when q is the thermal energy

and M is the mass of water = 100 g

and C is the specific heat capacity of water = 4.18 joules/gram.°C

and T is the difference in Temperature = 50 °C

So by substitution:

∴ q = 100 g * 4.18 J/g.°C * 50

= 20900 J = 20.9 KJ

6 0

3 years ago

Read 2 more answers

Chemical formula for 2 butyene is

yarga [219]

Answer:

$\text{C}_4\text{H}_6$

Explanation:

3 0

3 years ago

How will you know whether the crystallization point is reached​

How will you know whether the crystallization point is reached