Hydroxide Ion concentration in calcium hydroxide and barium Hydroxide is an example of _________ solution.a)isochoric solutionb)isohydric solutionsc)hypo solutiond)hyper solutionCorrect answer is option 'B'. Can you explain this answer?

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Hydroxide Ion concentration in calcium hydroxide and barium Hydroxide is an example of _________ solution.

a)
isochoric solution
b)
isohydric solutions
c)
hypo solution
d)
hyper solution

Correct answer is option 'B'. Can you explain this answer?

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Hydroxide Ion concentration in calcium hydroxide and barium Hydroxide ...

In the solution of two electrolytes, if the common ions’ concentration (Hydroxide Ion concentration in calcium hydroxide and barium hydroxide solution) is equal, then on mixing there is zero change in the degree of association in both of the electrolytes, such solutions are called isohydric solutions.

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Current high levels of fossil fuel use, including coal-burning power plants and gasoline-powered automobiles, have helped contribute to the high concentrations of sulfur trioxide, SO3, found in the atmosphere. When sulfur trioxide and water interact, they can undergo the following chemical reaction to produce sulfuric acid, which is the main contributor to acid rain worldwide:SO3+ H2O H2SO4Acid rain showers are particularly common near coal-burning power plants and large cities. These showers are responsible for significant economic damage to sidewalks, roads, and buildings. Scientists interested in studying the effects of acid rain often use basic substances like calcium carbonate, the main component of limestone buildings, and expose them to varying volumes of acid rain to determine what volume of acid rain is necessary to begin to erode a building. A sample graph of one scientist’s experiment is replicated below:Measuring acid and base levels is commonly done with a scale called pH, which uses the concentration of hydrogen ions to determine the acidity. Hydrogen ions are in a balance with hydroxide ions to give a scale with a range from 0 to 14. Values equal to or between 0 and 6.9 represent the acidic range where hydrogen ions predominate and values equal to or ranging from 7.1 and 14 represent the basic range where hydroxide ions predominate. Thus, the more hydrogen ions present, the more acidic the solution.Scientists can tell when a titration (pH) experiment passes a certain pH using compounds called indicators. Indicators are usually colorless at pH levels below that of their specified color change. A table of indicators used by the above scientists and the pH at which they change colors is presented below.Q.Solutions A, B, and C each contain a different number of hydrogen ions. Solution A has a pH of 6.9, solution B has a pH of 7.3, and solution C has a pH of 1.3. Place the solutions in order of increasing number of hydrogen ions.

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Directions:Read the passages and choose the best answer to each question.PassageWhen connection to a municipal water system is not feasible, wells are drilled to access ground water. Engineers employed by a company interested in developing a remote plot of land conducted studies to compare the water quality of 2 possible well locations on the land. Water quality is determined by a number of factors, including the levels of nitrates, lead, microbes, pH, “hardness” (calcium carbonat e), and alkalinity. The water samples were kept at a constant temperature of 72 F throughout the study. The results in Table 1 show the readings of each test for the two different 100 mL samples of water, as well as the ideal level, or concentration, for each chemical.The pH scale measures how acidic or basic a substance is on a scale of 0 to 14. Lower numbers indicate increasing acidity and higher numbers indicate increasing basicity.The normal pH level of groundwater systems is between 6 and 8.5. Water with a low pH (<6.5) could be acidic, soft, and corrosive, and could contain elevated levels of toxic metal that might cause premature damage to metal piping.Water with a pH > 8.5 could indicate that the water is hard.Hard water does not pose a health risk, but can cause mineral deposits on ﬁxtures and dishes and can have a bad taste and odor.Alkalinity is the water’s capacity to resist decreases in pH level. This resistance is achieved through a process called buffering (a buffered solution resists changes in pH until the buffer is used up). Alkalinity of natural water is determined by the soil and bedrock through which it passes. The main sources for natural alkalinity are rocks that contain carbonate, bicarbonate, and hydroxide compounds. These compounds, however, also cause hardness, which is less desirable in a drinking source. To illustrate the affect of alkalinity on pH stability, acid was added to two 100 milliliters sample solutions that initially had a pH of 6.5. The solution in Figure 1A had an alkalinity level of 200 mg/L while the solution in Figure 1B tested at zero alkalinity. The pH of the two solutions was recorded after every addition of acid and the results are shown in the ﬁgures below.Q.Which of the following statements best describes the concentration of lead in Sample 1?

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Hydroxide Ion concentration in calcium hydroxide and barium Hydroxide is an example of _________ solution.a)isochoric solutionb)isohydric solutionsc)hypo solutiond)hyper solutionCorrect answer is option 'B'. Can you explain this answer?

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