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3 years ago

True or false carboxylic acids are weak acids

1 answer:

lisabon 2012 [21]3 years ago

4 0

If we add 1 mole of acetic acid (carboxylic acid), then we will not obtain 1 mole of hydrogen ions or 1 mole of ions in the solution. This shows that carboxylic acid does not dissociate completely in water. Hence, carboxylic acid is a weaker acid than the inorganic acids. Hence, the given statement is true.

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Which of the following descriptions of the storage requirements for alkali metals is the most accurate? Select the correct answe

elena55 [62]

Answer:

A. They must be kept separate from moisture and oxygen

Explanation:

Alkali metals refers to a group of chemical elements in the periodic table. It is the common name given to Group 1 elements (excluding hydrogen). They are generally metallic in nature with physical properties like shining lustre, silvery in appearance etc. Alkali metals include lithium, Pottasium, Sodium, Rubidium etc.

One important chemical property of alkali metals is their high reactivity i.e. they tend to react quickly with other substances. For example, alkali metals react vigorously with water to form hydroxides. They also react with oxygen to form oxides. Due to this highly reactive properties, they are kept or stored away from moisture (water) and oxygen (present in air).

7 0

3 years ago

If the pressure of a 2. 00 L sample of gas is 50. 0 kPa, what pressure does the gas exert if its volume is decreased to 20. 0 mL

N76 [4]

The equation used for the calculation is P subscript 1 V subscript 1 equals P subscript 2 V subscript 2. Thus, option B is correct.

The pressure of the gas with respect to volume is given with inverse proportion. The ideal gas equation is given as:

$PV=nRT$

<h3>Equation for relation between volume and pressure</h3>

The initial pressure of the gas has been given as, $P_1=50\;\rm kPa$

The initial volume of the gas has been, $V_1=2\;\rm L$

The final volume of the gas has been, $V_2=0.02\;\rm L$

The final pressure of the gas, $P_2$ is given as:

$P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}$

Thus, the equation used for the calculation is P subscript 1 V subscript 1 equals P subscript 2 V subscript 2. Thus, option B is correct.

Learn more about ideal gas, here:

brainly.com/question/8711877

3 0

3 years ago

what two bodies of water form a key transportation route connecting the interior of Canada to the Atlantic Ocean? and its scienc

hodyreva [135]

Answer:

Lake Ontario and St Lawrence Seaway

Explanation:

The Great Lakes are connected to the Atlantic Ocean through the St. Lawrence Seaway.

5 0

4 years ago

WHAT is used instead of soap because it will not create an insoluble s c u m when mixed with hard water.

pogonyaev

Hard water contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates. Ferrous ion may also be present;

<u>Explanation</u>:

Hard water contains salts of calcium and magnesium principally as bicarbonates, chlorides, and sulfates. Ferrous ion may also be present; oxidized to the ferric form. It appears as a reddish brown stain on washed fabrics and enameled surfaces.

Water hardness that is caused by calcium bicarbonates is known as temporary, because boiling converts the bicarbonates to the insoluble carbonates; hardness from other salts is called permanent.

Calcium and magnesium ions in hard water react with the higher fatty acids off soap to form an insoluble gelatinous curd, thereby causing a waste of the soap.

4 0

3 years ago

How is an ionic compound made up of charged particles can be electrically neutral

Elina [12.6K]

Answer:

Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.

Explanation:

5 0

3 years ago