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4 years ago

Why alcohol is completely miscrible with water. explain?

Chemistry

1 answer:

Julli [10]4 years ago

7 0

Answer:

Both water and ethanol are polar and due to miscibility, Ethanol has OH groups capable of forming hydrogen bonds with the water molecule. Hydrogen bonds are formed when the oxygen attached to the alcohols form hydrogen bonds between the molecules and water. This explains the solubility of methanol.

Explanation:

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Which of the following is not true about chemical changes? a. They form a new substance. b. They can be reversed by physical cha

Sonbull [250]

Answer: The correct option is b.

Explanation: Chemical reaction is a reaction i which the chemical composition of the reactants gets changed and new substances having different chemical composition is formed. This reaction cannot be reversed by any physical means.

Indicators showing chemical changes are :

Color change
Characteristic odor
Formation of bubbles
Formation of precipitate

From the given information above, it can be stated that the correct option is b.

8 0

3 years ago

Read 2 more answers

Please help if you can help me, you can have all my points and be brainlest!

brilliants [131]

Answer:

Erosion by water

Explanation:

Moving water carrying away small pieces of rock is erosion by water.

E.g when the sea hits on the cliff and then takes away the fragments with it

Hope I helped

5 0

3 years ago

Please anyone help me

sweet-ann [11.9K]

Answer:

F. a dark solid formed on the zinc.

-Is because when the solid is formed it is called the "precipitate", which is commonly know as chemical reaction.

8 0

3 years ago

A container of N2O3(g) has a pressure of 0.265 atm. When the absolute temperature of the N2O3(g) is tripled, the gas completely

Rzqust [24]

Answer:

1.59 atm

Explanation:

The reaction is:

$N_{2}O_{3}(g) - - -> NO_{2}(g)+NO(g)$

The dalton's law tell us that the total pressure of a mixture of gases is the sum of the partial pressure of every gas.

So after the reaction the total pressure is:

$P_{total}=P_{NO_{2}}+P_{NO}$

we don't include $N_{2}O_{3}$ because it decomposed completely.

Assuming ideal gases

PV=nRT

P= pressure, V= volume of the container, n= mol of gas, R=constant of gases and T=temperature.

so moles of $N_{2}O_{3}$ is:

$n_{N_{2}O_{3}}=\frac{P_{1}V}{RT_{1}}$

from the reaction stoichiometry (1:1) we have that after the reaction the number of moles of each product is the same number of moles of $N_{2}O_{3}$ .

$n_{NO_{2}}=\frac{P_{1}V}{RT_{1}}$