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4 years ago

How do you separate alcohol and water ?

Chemistry

1 answer:

alexgriva [62]4 years ago

3 0

Answer:

liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points. When the mixture is heated, one liquid evaporates before the other.

Explanation:

hope this helps :3

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Which pair of substances would most likely result in the production of a gas when reacting with an acid?

vovangra [49]

Answer: metal and carbonate

Explanation:

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydrogen ions $(H^+)$ in water.

An acid is represented as :

$HX\rightarrow H^++X^-$

1. When metal is treated with an acid such as $HCl$ , if the metal is more reactive than hydrogen displaces hydrogen from its salt solution and thus produce zinc chloride and hydrogen gas.

$M+xHCl(aq)\rightarrow MCl_x(aq)+xH_2(g)$

2. When carbonates are treated with acid, double displacement takes place ad carbon dioxide is released as a gas.

$MCO_3(aq)+xHCl(aq)\rightarrow MCl_x(aq)+xH_2O(l)+CO_2(g)$

7 0

4 years ago

Read 2 more answers

50cm3 of a mixture of methane and hydrogen were mixed with excess oxygen and exploded, the product after cooling to the original

marin [14]

Answer:the initial composition of the reactants is

40cm^3 of CH4

40cm^3of H2

100cm^3 of H2O

Explanation:

Balanced reaction is

CH4 +H2+5/2O2______

CO2 +3H2O

Excess KOH at room temperature absorbs CO2 whose volume is given by 40cm^3 i.e the volume by which the solution decreases

So using Gay lussac combining ratio which states that gases combine in volumes that are in simple ratio to each other if gases.

Since CO2 in the equation is 1 mole

Means 1mole represent 40cm^3

So CH4:H2:O2 are in ratio of 1:1:5/2=(40:40:100)cm^3 respectively.

8 0

3 years ago

What is the volume of 0.284g of carbon dioxide at STP ??

coldgirl [10]

Answer:

Explanatio

NCO2= 0, 248 /44= 0 ,005636

VCO2= 0,005636* 22,4= 0 ,126254545

6 0

3 years ago

How many grams of Aspirin (acetylsalicylic acid) should we form in this reaction if we started with 2.08g of Salicyclic Acid?

Kamila [148]

Taking into account the reaction stoichiometry, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

C₄H₆O₃ + C₇H₆O₃ (Salicyclic Acid) →C₉H₈O₄ (aspirin) + C₂H₄O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₄H₆O₃: 1 mole
C₇H₆O₃: 1 mole
C₉H₈O₄: 1 mole
C₂H₄O₂: 1 mole

The molar mass of the compounds is:

C₄H₆O₃: 102 g/mole
C₇H₆O₃: 138 g/mole
C₉H₈O₄: 180 g/mole
C₂H₄O₂: 60 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

C₄H₆O₃: 1 mole ×102 g/mole= 102 grams
C₇H₆O₃: 1 mole ×138 g/mole= 138 grams
C₉H₈O₄: 1 mole ×180 g/mole= 180 grams
C₂H₄O₂: 1 mole ×60 g/mole= 60 grams

<h3>Mass of aspirin formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 138 grams of salicyclic acid form 180 grams of aspirin, 2.08 grams of salicyclic acid form how much mass of aspirin?

$mass of aspirin=\frac{2.08 grams of salicyclic acidx 180 grams of aspirin}{138 grams of salicyclic acid}$