Point in a titration at which the quantity of titrant is exactly sufficient for stoichiometric reaction with the analyte.

Positive Deviation from Raoult's Law occurs when the vapour pressure of component is greater than what is expected in Raoult's L

8090 [49]

Answer:

All of the above.

Explanation:

In positive deviation from Raoult's Law occur when the vapour pressure of components is greater than what is expected value in Raoult's law.

When a solution is non ideal then it shows positive or negative deviation.

Let two solutions A and B to form non- ideal solutions.let the vapour pressure of component A is $P_A$ and vapour pressure of component B is $P_B$ .

$P^0_A$ = Vapour pressure of component A in pure form

$P^0_B$ = Vapour pressure of component B in pure form

$x_A$ =Mole fraction of component A

$x_B=$ =Mole fraction of component B

The interaction between A- B is less than the interaction A- A and B-B interaction.Therefore, the escaping tendency of liquid molecules in mixture is greater than the escaping tendency in pure form.Hence, the vapour pressure of a mixture is greater than the initial value of vapour pressure.

$P_A >P^0_A\cdot x_A$ , $P_B>P^0_B\cdot x_B$

Therefore, $P_A+P_B >P^0_A\cdot x_A+P^0_B \cdot x_B$

Therefore, the enthalpy of mixing is greater than zero and change in volume is greater than zero.

Hence, option a,b,c and d are true.

6 0

4 years ago

Order earths layers from highest temperature to lowest temperature .

Andreyy89

Inner Core, Outer Core, Lower Mantle, Upper Mantle, Crust.

5 0

3 years ago

Hi everyone, I'm really stuck on a question for my uni assignment, i just dont understand chemistry at all, i was wondering if a

sdas [7]

<h3>Answer : 2C + 3H2 -> C2H6</h3>

<h3>Step and explanation</h3>

Condition : graphite + hydrogen gas

Chemical formula : C + H2

Reaction formula :

C + H2 -> C2H6

#First, you see the number of atom

•Product

C = 1

H = 2

•Reactant

C = 2

H = 6

#Note that, in a chemical reaction both number of each atom in product must be equal in reactant so, you think what number you need to put Infront of the chemical formula so that the number of atom equal

2C + 3H2 -> C2H6

#Now check again

•Product

C = 2

H = 6

•Reactant

C = 2

H6

#Now, its equal. The bold one is the balance chemical reaction

<h3>Note (just incase u dont know)</h3>

Reactant -> product (the thing you get after reaction)

7 0

3 years ago

The percent yield of a reaction in 2 points which 52 grams of a reactant is expected to yield 30 grams of product is 25%. What i

bagirrra123 [75]

Answer:

idk

Explanation:

dong know

6 0

3 years ago

How does the disturbance travel through the coil when you move your arm back and forth?

kherson [118]

Answer:

The waves travel in a direction parallel to direction of the vibration of the medium

4 0

3 years ago