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Question

Given below are two statements :
Statement I : Compound (X), shown below, dissolves in $\text{NaHCO}_3$ solution and has two chiral carbon atoms
Statement II : Compound (Y), shown below, has two carbons with $\text{sp}^3$ hybridization, one carbon with $\text{sp}^2$ and one carbon with $\text{sp}$ hybridization
In the light of the above statements, choose the correct answer from the options given below :

The correct answer is
Statement I is false but Statement II is true

Let's analyze each statement:

  1. Statement I: Compound (X) is shown below and is said to dissolve in \(\text{NaHCO}_3\) solution and has two chiral carbon atoms.
  • In the given compound (X), which is a bromophenyl group attached to a ketone and a propanoic acid group, only one carbon might be chiral. The carbon next to the carbonyl group in a ketone is usually sp3 hybridized and can potentially be chiral. However, upon closer inspection, only one chiral center is present.
  • For a compound to dissolve in \(\text{NaHCO}_3\), it should be acidic. Carboxylic acids react with \(\text{NaHCO}_3\) to form carbon dioxide bubbles. Thus, Compound (X) will dissolve in \(\text{NaHCO}_3\).
  • Conclusion: The statement about two chiral carbon atoms is incorrect, making Statement I false.
  1. Statement II: Compound (Y), shown below, has two carbons with \(\text{sp}^3\) hybridization, one carbon with \(\text{sp}^2\) and one carbon with \(\text{sp}\) hybridization.
  • Compound (Y) is a cumulene with a terminal alkene group connected to an alkyne. The hybridization of the carbons can be identified as:
    • Two carbons in the alkyl group are sp3 hybridized because they are single-bonded to other atoms.
    • The carbon in the carbonyl group is sp2 hybridized.
    • The carbon in the cumulative double-bond system (carbon number three in the alkyl group) is sp hybridized.
  • Conclusion: Statement II correctly identifies the hybridization state of each carbon atom in compound (Y), making it true.

Final Answer: Statement I is false but Statement II is true.

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Similar Questions

  1. In Dumas method for estimation of nitrogen, 0.50 g of an organic compound gave 70 mL of nitrogen collected at 300 K and 715 mm pressure. The percentage of nitrogen in the organic compound is ______ %.
    (Aqueous tension at 300 K is 15 mm).
  2. Given below are two statements:
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Important Questions from Organic Chemistry

  1. In Dumas method for estimation of nitrogen, 0.50 g of an organic compound gave 70 mL of nitrogen collected at 300 K and 715 mm pressure. The percentage of nitrogen in the organic compound is ______ %.
    (Aqueous tension at 300 K is 15 mm).
  2. Given below are two statements:
    Statement I: The dipole moment of R-CN is greater than R-NC and R-NC can undergo hydrolysis under acidic medium to produce
    Statement II: R-CN hydrolyses under acidic medium to produce a compound which on treatment with $\text{SOCl}_2$, followed by the addition of $\text{NH}_3$ gives another compound(x). This compound (x) on treatment with $\text{NaOCl/NaOH}$ gives a product, that on treatment with $\text{CHCl}_3\text{/KOH/}\Delta$ produces R-NC
    In the light of the above statements, choose the correct answer from the options given below

  3. Given below are two statements:
    Statement I: Cross aldol condensation between two different aldehydes will always produce four different products.
    Statement II: When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH, it forms a condensation product with acetophenone only.
    In the light of the above statements, choose the correct answer from the options given below
  4. $0.25 \text{ g}$ of an organic compound "A" containing carbon, hydrogen and oxygen was analysed using the combustion method. There was an increase in mass of $\text{CaCl}_2$ tube and potash tube at the end of the experiment. The amount was found to be $0.15 \text{ g}$ and $0.1837 \text{ g}$, respectively. The percentage of oxygen in compound A is ______ %. (Nearest integer)
    (Given: molar mass in $\text{g mol}^{-1}$ $\text{H} : 1, \text{C} : 12, \text{O} : 16$)
  5. Grignard reagent $\text{RMgBr (P)}$ reacts with water and forms a gas $\text{(Q)}$. One gram of Q occupies $1.4 \text{ dm}^3$ at STP. (P) on reaction with dry ice in dry ether followed by $\text{H}_3\text{O}^+$ forms a compound $\text{(Z)}$. 0.1 mole of $\text{(Z)}$ will weigh _________ g. (Nearest integer)
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