Answer:
Option-D (Acetone is a ketone. Grignard reagents will react with acetone to make an unwanted byproduct.) is the correct answer.
Explanation:
Grignard reagents are formed by reacting alkyl halides in the presence of ether and dry atmosphere at controlled conditions. The rinsing of glassware is not suitable to be done with Acetone. This is because of the reactivity of Grignard reagents towards the carbonyl compounds.
In the scheme below it is assumed that a grignard reagent (ethyl magnesium bromide) was reacted with pentan-2-one to synthesise a tertiary alcohol (3-methylhexan-3-ol). But when the glassware is rinsed with acetone, some acetone left in glassware (like Round bottom flask) will react with the grignard reagent and will produce corresponding tertiary alcohol (2-methylbutan-2-ol in this assumption).
Explanation:
Helium is produced in radioactive process that occurs in deep and underground formations. They differ from other atmospheric gases. These radioactive decay of heavier nuclides that are unstable started about the time when the earth was formed.
- As they decay they give off lighter particles that can easily be broken down into more stable ones.
- One of the main product of the decay is alpha particles.
- They have the same atomic structure as helium
- These materials are trapped in underground formations.
Answer:
B
Explanation:
its solute state is gas and dissolve in (solvent) liquid which is water
Consideting the definition of electrolyte, the concentration of Ba²⁺ is 0.750 M and the concentration of OH⁻ is 1.5 M.
<h3>Definition of electrolyte</h3>
An electrolyte is a substance that dissolves in water and gives rise to the formation of ions. Electrolytes can be weak or strong, depending on whether they are partially or totally ionized or dissociated in aqueous media.
A strong electrolyte is any substance that, when dissolved in water, exclusively causes the formation of ions with a practically irreversible dissolution reaction.
A weak electrolyte is a substance that, when dissolved in water, produces partial ions, with reversible reactions.
<h3>This case</h3>
The equation for dissociation is:
Ba(OH)₂ → Ba²⁺ + 2 OH⁻
You can observe that the mole ratio of Ba(OH)₂: Ba²⁺ is 1: 1 and the mole ratio of Ba(OH)₂: OH⁻ is 1: 2.
Since Ba(OH)₂ is a strong electrolyte, it dissociates completely. Then, the concentration of Ba²⁺ is 0.750 M and the concentration of OH⁻ is 2×0.750 M= 1.5 M
In summary, the concentration of Ba²⁺ is 0.750 M and the concentration of OH⁻ is 1.5 M.
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