Chemistry, 23.07.2019 13:30 charlzperru8234

Asolution of acetone [(ch3)2c═o] in ethanol (ch3ch2oh) in the presence of a trace of acid was allowed to stand for several days, and a new compound of molecular formula c7h16o2 was formed. the ir spectrum showed only one major peak in the functional group region around 3000 cm−1, and the 1h nmr spectrum is given below. what is the structure of the product?

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When Ketone is reacted with Alcohol (1:1) in the presence of Acid it produces HemiKetal, HemiKetal on further reaction with alcohol gives Ketal as shown below.

The major peak in the functional group region around 3000 cm⁻¹ in IR spectrum shows the C-H stretching of sp³ hybridized carbon.

And in ¹H-NMR there are two peaks for 6 H each, which shows the terminal methyl groups of almost same electron density, and a quartet peak for 4H in downfield region which is for the two equivalent protons attached to oxygen atom.
Asolution of acetone [(ch3)2c═o] in ethanol (ch3ch2oh) in the presence of a trace of acid was allowe

Asolution of acetone [(ch3)2c═o] in ethanol (ch3ch2oh) in the presence of a trace of acid was allowe

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Answer from: Quest

It conforms what ever surface its in.

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Asolution of acetone [(ch3)2c═o] in ethanol (ch3ch2oh) in the presence of a trace of acid was allowe...