How can you tell which ionic compounds will react in an aqueous solution

Answers

Answer 1

Answer: 1. Determine if the ionic substances can break apart into ions.
- e.g. CaCO3 isn't very soluble, do it can't dissolve and dissociate. If it can't pop apart, no ions.
2. Swap the partners for all the other ions that you can get from step 1. You can skip pairings with the same charge - a + can't get close to another + to react.
3. Use solubility, acid/base, and redox rules to see if anything will happen with the ions in solution.

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What was John Dalton's contribution to the development of the atomic theory?A
Dalton recognized that tiny atoms combined to form complex structures.

B
Dalton recognized the presence of electrons around a nucleus.

C
Dalton recognized the presence of protons in the nucleus.

Answers

Answer:

A. Dalton recognized that tiny atoms combined to form complex structures.

State, in terms of subatomic particles, how an atom of C-13 is different from an atom of C-12

Answers

C-12 and C-13 are isotopes of the element carbon. Since they are both of the same element, they have the same number of protons. The number that follows the C indicates the number of neutrons. Isotopes are variations of the element with different number of neutrons. C-12 shows that that variation of carbon has 6 protons and 6 neutrons for a total mass of 12. C-13 shows that it has 6 protons but 7 neutrons for a total mass of 13

A biochemist is attempting to replicate a chemical reaction that commonly takes place in cells. During the chemical reaction, starch is broken down into glucose. What will most likely happen if the amount of enzyme that catalyzes this reaction is increased?

A. The reaction will stop.
B. The reaction will slow down.
C. The reaction will speed up.

Answers

C. the reaction will speed up, as the role of a catalyst is to increase the rate of reaction

Select the atomic symbol that would represent an isotope with 13 protons and 14 neutrons. A. 14 16 N B. 13 6 C C. 27 14 Si D. 27 13 Al

Answers

Answer:

D. 27 13 Al

Explanation:

13 protons means atomic number 13. The periodic table says element 13 is aluminum (Al). 27 is the atomic mass, made up of 13 protons (1 each) and 14 neutrons (also 1 each) for a total of 27 atomic mass.

Substance X has a specific heat capacity that is twice as large as Substance Y. If both samples ended up at the same change in temperature from the same amount of energy added, what is the relationship between the masses of the two samples? Explain.

Answers

Answer:

Substance X has a smaller mass

Explanation:

The relationship between the mass of the two samples is that the mass of X is smaller compared to the mass of Y.

The specific heat capacity is given as:

C = $(H)/(m x change in temperature)$

We can see that the higher the specific heat capacity the lesser the mass or simply put, the specific heat capacity of a body is inversely related to its mass.

If the amount of heat is constant i.e the same and the specific heat capacity of X is twice that of Y, then substance X has a smaller mass

Final answer:

The relationship between the masses of Substance X and Substance Y is mx : my = (cY) : (cX), which means that the ratio of their masses is equal to the inverse of the ratio of their specific heat capacities.

Explanation:

To determine the relationship between the masses of Substance X and Substance Y, we can use the equation Q = mcΔT, where Q represents the amount of heat added, m represents the mass of the substance, c represents the specific heat capacity, and ΔT represents the change in temperature.

Let's assume that the same amount of energy is added to both Substance X and Substance Y, resulting in the same change in temperature. Since Substance X has a specific heat capacity that is twice as large as Substance Y, we can set up the following equation:

mx(cX)ΔT = my(cY)ΔT

Canceling out ΔT on both sides of the equation, we get:

mx(cX) = my(cY)

To find the relationship between the masses, we can divide both sides of the equation by (cY) and simplify:

mx / my = (cY) / (cX)

Therefore, the relationship between the masses of Substance X and Substance Y is mx : my = (cY) : (cX), which means that the ratio of their masses is equal to the inverse of the ratio of their specific heat capacities.

Learn more about specific heat capacity

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Predict which of the following compounds will be insoluble in water.A. NaCl
B. HCl
C. CF4
D. CuSO4

Answers

$\boxed{{\text{C}}{\text{. C}}{{\text{F}}_4}}$ will be insoluble in water.

Further Explanation:

The bond formed due to electrostatic forces is an ionic bond. The compounds formed by the ions of the respective species are called ionic compounds. One of the species loses electrons and gets converted into cation while the other one accepts electrons and forms anion.

Covalent compound:

The bond that is formed by the mutual sharing of electrons between the bonded atoms is called a covalent bond. It is also known as a molecular bond. Covalent compounds or molecular compounds are those compounds which are formed by the electron sharing between two or more non-metals.

Solubility is the property of any substance that makes it soluble in other substances. It is governed by the principle “like dissolves like”.

A. NaCl is an ionic compound so it dissociates into its constituent ions on dissolving in water. Water is a polar molecule and therefore NaCl is soluble in water.

B. HCl is a polar covalent compound and water is also a polar compound so HCl is soluble in water in accordance with the principle “like dissolves like”.

C. ${\text{C}}{{\text{F}}_{\text{4}}}$ is a non-polar compound while water is a polar compound. So ${\text{C}}{{\text{F}}_{\text{4}}}$ is insoluble in water because of different nature of both substances.

D. ${\text{CuS}}{{\text{O}}_{\text{4}}}$ is an ionic compound so it dissociates into ${\text{C}}{{\text{u}}^(2 + )}$ and ${\text{SO}}_4^(2 - )$ ions on dissolving in water. Water is a polar molecule and therefore ${\text{CuS}}{{\text{O}}_{\text{4}}}$ is soluble in water.

Learn more:

1. Identification of ionic bonding: brainly.com/question/1603987

2. What type of bond exists between phosphorus and chlorine? brainly.com/question/81715

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: ionic compound, covalent compound, solubility, NaCl, HCl, CuSO4, CF4, soluble, insoluble, water, like dissolves like.

Final answer:

Among the compounds NaCl, HCl, CuSO4, and CF4, the latter, CF4, is predicted to be insoluble in water due to its nonpolar nature.

Explanation:

The insolubility of a compound in water depends on its polarity. Nonpolar compounds do not dissolve in water, a polar solvent. The compounds NaCl, HCl, and CuSO4 are all polar ionic compounds and, therefore, soluble in water, since 'like dissolves like'. However, the compound CF4 is a nonpolar molecule and hence predicted to be insoluble in water.

Learn more about Solubility here:

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