The concentration of an acid or base is defined as the ratio of the amount ofO A. solvent to the amount of solute in a solution
O B. conjugate acid to conjugate base
O C. conjugate base to conjugate acid
OD. solute to the amount of solvent in a solution
Answers
Answer:
Option C
Explanation:
A buffer aqueous solution consists of
a) either a weak acid along with its conjugate base
b) or a weak base along with its conjugate acid.
This is used to prevent change in the pH of a solution whenever an acid or a base is added. The pH of a buffer depends upon the ratio of base to acid and this ratio is determined by the Ka value and Henderson-Hasselbalch equation. An ideal buffer has equal amounts of acid and conjugate base
Hence, option C is correct
Related Questions
The science of observing and forecasting weather conditions is called
Which type of radiation is the smallest in size?
In a chemical equation the arrow (indicating a reaction) points in which direction
Is amber eye color considered brown?
Answers
Explanation:
ionisation energy decrease down the group as the atomic radius increases. Nuclear charge increases. Number of shell increases so the electron will experience more shielding so it would be easier for the atom to loss electron.
Final answer:
The atomic radius increases as you move down a group from Li to Cs, while the atomic radius generally decreases as you move across a period from Li to Cs. The ionization energy decreases down a group and increases across a period.
Explanation:
The atomic radius is the size of an atom, while ionization energy is the energy required to remove an electron from an atom. In general, as we move down a group from Li to Cs, the atomic radius increases due to the addition of more energy levels. This is because the electrons occupy higher energy orbitals farther away from the nucleus. On the other hand, as we move across a period from Li to Cs, the atomic radius generally decreases. This is because the effective nuclear charge increases, pulling the electrons closer to the nucleus.
Regarding ionization energy, it generally decreases down a group from Li to Cs. This is because the atomic radius increases, therefore making it easier to remove an electron from a larger, higher energy orbital. Conversely, as we move across a period, the ionization energy generally increases. This is because the atomic radius decreases, and the electrons are held more tightly by the increasing nuclear charge.
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B. Drying wood in a shed
C. Melting ice to obtain water
D. Evaporating alcohol into vapor
Answers
Coal combustion causes a chemical change. Burning coal in a furnace will result in a chemical change. Therefore, option A is correct.
What is chemical change ?
A chemical change is the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances. It occurs when one substance reacts with another to form a new substance.
Coal combustion causes a chemical change. The main component, carbon, is converted to carbon dioxide when coal is burned. This process is irreversible.
When carbon is burned, it produces carbon dioxide, and hydrogen produces water. Each of these reactions generates a different amount of heat. Because this process cannot be reversed, coal combustion is a chemical change.
Thus, option A is correct.
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Answers
Answer: The alkane containing 100 hydrogens will be
Explanation:
Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms.These are called as alkanes. The general formula for these hydrocarbons is
As given number of hydrogen atoms is 100, therefore the value of (2n+2) = 100
2n = 98
n = 49
Thus the formula for the alkane containing 100 hydrogens will be
Final answer:
The alkane containing 100 hydrogens has the formula C49H100.
Explanation:
The formula for the alkane containing 100 hydrogens can be determined using the general formula for alkanes, which is CnH2n+2. To find the value of n, we can set up an equation:
100 = 2n + 2
Simplifying this equation, we get:
n = 49
Therefore, the formula for the alkane containing 100 hydrogens is C49H100.
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A) fusion
B) fission
C) radiance
D) solar flaring
Answers
Answer: Option (A) is the correct answer.
Explanation:
The process in which two or more small nuclei combine together to result in the formation of a larger nuclei is known as fusion.
In Sun, four hydrogen nuclei combine together to result in the formation of helium atom. This combining of small hydrogen nuclei to form a large helium nuclei represents fusion process occurring inside the Sun.
Thus, we can conclude that to power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as fusion.
Answer: -
Without the sun, life on earth would not exist. There would be no warmth, no plants, no animals, no night and day.
To power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as
A) Fusion
Fusion produces a lot of energy but very little radioactive waste.
Answers
Answer:
Te is considered a Group A element.
Explanation:
Fe, Hg and Y belong to Group B.
U is a transition element.
Te is the only element that belong to Group A.
I hope I've solved your doubt.
Answers
Final answer:
The reaction will proceed in the forward direction to reach equilibrium.
Explanation:
To determine which reaction will go in order to reach equilibrium, we need to compare the initial number of moles of reactants to the stoichiometric coefficients of the balanced equation. The balanced equation for the reaction between NH₃, N₂, and H₂ is:
NH₃ + N₂ ↔ 2NH₃
Since the initial number of moles of NH₃, N₂, and H₂ are the same (1.00 mole each), the reaction will proceed in the forward direction to reach equilibrium.
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