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8_murik_8 [283]
3 years ago
6

What aldol product is formed when two molecules of butanal react together in the presence of base?

Chemistry
1 answer:
Ainat [17]3 years ago
4 0
It is an example of Self Condensation reaction as both the nucleophile and the electrophile are the same compounds. When Butanal is reacted with base, the hydrogen at alpha position is abstracted due to its mild acidity and enolate is formed. Enolate attacks second Butanal molecule and forms a compound containing both Hydroxyl group and carbonyl group (Beta hydroxy aldehyde). Reaction is shown below and the name of product is specified below its structure, 

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If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?
krok68 [10]

Answer:

\large\boxed{\large\boxed{0.64M}}

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

          \text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}

Substitute and solve for the molarity of the diluted solution:

           250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M

8 0
3 years ago
A 33.69 g sample of a substance is initially at 29.4 °c. after absorbing 1623 j of heat, the temperature of the substance is 110
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4 0
3 years ago
In which of the following is the symbol for the ion and the number of electrons it contains given correctly?
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The answer is A. .....
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Elina [12.6K]

Answer: 631.8 g

Explanation:

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It can be seen from the balanced chemical equation, 2 moles of ethane reacts with 7 moles of Oxygen gas to produce 4 moles of carbon dioxide and 6 moles of water.

Ethane is the limiting reagent as it limits the formation of product.

Thus, if  2 moles of ethane produce 6 moles of water.

11.7 moles moles of ethane produce=\frac{6}{2}\times 11.7=35.1 molesof water.

Mass of water= no of moles\times Molar mass

Mass of water= 35.1\times 18g/mol= 631.8 g

4 0
3 years ago
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<span>answer C hope you get it right</span>
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