Verified Solution • 2025–26 Session moderate

QJEEM21Ch9961: JEE Main 2021 Chemistry - Class 11 JEEM21Ch9961 Solution: The number of moles of CuO, that will be utilized in Dumas…

The number of moles of CuO, that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g of N, N-dimethylaminopentane is _____________

\times

10^{$-$ 2}. (Nearest integer)

Step-by-Step Verified Solution

Moles of N in N, N - dimethylaminopentane =

(\frac{57.5}{115})

= 0.5 mol

\Rightarrow C_{7} H_{17} N + \frac{45}{2} C u O \to 7 C O_{2} + \frac{17}{2} H_{2} O + \frac{1}{2} N_{2} + \frac{45}{2} C u

\frac{n_{C u O} r e a c t e d}{(\frac{45}{2})} = \frac{n_{C_{7} H_{17} N} r e a c t e d}{1}

\Rightarrow

n_CuO reacted =

(\frac{45}{2}) \times 0.5 = 11.25

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