which of the following is an arrhenius base? a brønsted-lowry base? a lewis base? it is possible for a base to be of more than one type.

Answers

Answer 1

Answer:

Final answer:

An Arrhenius base produces hydroxide ions (–OH) when dissolved in water. A Brønsted-Lowry base can accept a proton (H+) from another substance. A Lewis base donates a pair of electrons to form a coordinate covalent bond.

Explanation:

An Arrhenius base is a substance that produces hydroxide ions (–OH) when dissolved in water. An example of an Arrhenius base is sodium hydroxide (NaOH), which dissociates in water to form Na+ and OH– ions.

A Brønsted-Lowry base is a substance that can accept a proton (H+) from another substance. Ammonia (NH3) is an example of a Brønsted-Lowry base as it can accept a proton to form its conjugate acid, ammonium (NH4+).

A Lewis base is a substance that donates a pair of electrons to form a coordinate covalent bond. An example of a Lewis base is ammonia (NH3), which donates a pair of electrons to a Lewis acid to form a Lewis acid-base complex.

It is possible for a base to be of more than one type. For example, ammonia (NH3) is both a Brønsted-Lowry base and a Lewis base.

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Answer 2

Answer:

Final answer:

An Arrhenius base is a substance that increases the concentration of OH- in water. A Brønsted-Lowry base is a substance that can accept a hydrogen ion. A Lewis base can donate an electron pair. It is possible for a base to be classified as more than one type.

Explanation:

An Arrhenius base is defined as a substance that increases the concentration of hydroxide ions (OH-) when dissolved in water. Sodium hydroxide (NaOH) is an example of an Arrhenius base as it dissociates in water to form a sodium ion (Na+) and a hydroxide ion (OH-).

A Brønsted-Lowry base, on the other hand, is any substance that can accept a proton (a hydrogen ion). Ammonia (NH3) is a common example of a Brønsted-Lowry base. When it reacts with water, it accepts a proton from a water molecule, forming its conjugate acid, ammonium (NH4+).

Last but not least, a Lewis base is a substance that can donate an electron pair. For example, ammonia (NH3) can act as a Lewis base as it donates its lone pair of electrons to form a coordinate covalent bond.

Yes, it is possible for a base to be categorized as both an Arrhenius, Brønsted-Lowry, and Lewis base - water (H2O) is one such example.

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#1: The concentration of a solution can be described in several ways. In which of these ways do you calculate the moles of a solute divided by the kilograms of solvent? A. molality B. molarity C. mole fraction D. mass percent

How many molecules are there in 79g of Fe2O3? how many atoms is thi

Answers

Molar masses:
$m_(Fe) = 56g/mol\nm_(O) = 16g/mol\n\n\therefore m_{Fe_(2)O_(3)} = 2 \cdot (56)+3 \cdot (16) = 112+48 = 160g/mol$

So:

$1mol \ Fe_(2)O_(3) = 160g = 6 \cdot 10^(23)molecules$

160g ---------- 6·10²³molecules
79g ---------- x

x = 2.9625·10²³ molecules

1molecule = 5 atoms
2.9625·10²³ molecules = 2.9625·10²³·5 = 14.8125·10²³ atoms

How many joules are absorbed in a process that absorbs 0.5720 kcal?

Answers

Both joules and kilocalories are units of measurement for energy. This means that the solution to this problem can be solved just by converting the units using the appropriate conversion factors. One kilocalorie is equal to 4,184 joules. Multiply 0.5720 kcal by 4,184 to get the value in joules. This gives 2,393.25 joules.

Which polyatomic ion has a charge of 3-?

Answers

Most of the common inorganic polyatomic ions have negative charges. This means the ion has more electrons than the neutral atoms that are in the ion. A polyatomic ion like phosphate, PO43- has three extra electrons beyond the electrons on the P and O atoms. Got this off google sorry if it doesn't help you :(

Please show step by step and I will mark you as brainliest answer ❤️

Answers

Answer: The pH of the solution is 13.

Explanation:

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution.

$pOH=-\log [OH^-]$

We are given:

Concentration of $Ca(OH)_2=0.05mol/dm^3=0.5mol/L$ (Conversion factor: $1L = 1dm^3$ )

1 mole of calcium hydroxide produces 1 mole of calcium ions and 2 moles of hydroxide ions

Concentration of $OH^-=(2* 0.05)=0.1mol/L$

Putting values in above equation, we get:

$pOH=-\log (0.1)\n\npOH=1$

We know:

$pH+pOH=14\n\npH=14-1\n\npH=13$

Hence, the pH of the solution is 13.

Why does the chemical reaction seen here obey the law of conservation of matter? a. because there are the same number of atoms of each element shown on both sides
b. because they both start and end with diatomic (two-atomed) molecules
c. because they both start and end with the same types of particles
d. because they both start and end with two sets of particles eliminate

Answers

Why does the chemical reaction seen here obey the law of conservation of matter?

Answer:

Because there are the same number of atoms of each element shown on both sides

Explanation

As in chemical reactions, atoms bonds are break and new bonds are formed. As new substance are formed but overall they have same elements, no new elements come from outside or go to outside. In other words , rearrangement of atoms take place but number of atoms remained same.

NaOH + HCl -----> NaCl + H2O

As in above reaction there are the same number of atoms of each element shown on both sides .

The chemical reaction seen here obey the law of conservation of matter because there are the same number of atoms of each element shown on both sides. The answer is A. Thank you for posting your question here. I hope it helps.

Read the information in the table below: Reaction
A Energy to break bonds is more than energy release to form bonds

B Energy to break bonds is less than energy release to form bonds

Which type of reaction is represented by B?
Endothermic reaction
Exothermic reaction
Reaction between liquids
Reaction between solids

Answers

Answer:

Reaction B is exothermic

Explanation:

From the context of thermodynamics, chemical reactions can be broadly classified as endothermic and exothermic reactions.

Endothermic reactions involve absorption of energy and show a positive value for the reaction enthalpy i.e. ΔH is positive. In contrast, exothermic reactions are accompanied by the release of energy and show a negative value for the enthalpy change i.e. ΔH is negative.

In a given chemical reaction energy is required to break bonds and it is released during the formation of new bonds.

The Reaction B is such that, the energy required to break bonds is less than energy released during formation bonds. Therefore, since there is a net release of energy, the reaction is exothermic.

Exothermic Reactions

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