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JEE Main202523 Jan 2025Morning ShiftChemistryIonic EquilibriumActual

If 1 mM solution of ethylamine produces pH =9 , then the ionization constant ( K _ b ) of ethylamine is 10^ -x . The value of x is ______ (nearest integer). [The degree of ionization of ethylamine can be neglected with respect to unity.]

Correct answer

0

Step-by-step solution

Given, P ^ H =9 P ^ OH =5 [ OH ]=10⁻⁵ M Now, K _ b = [ C ₂ H ₅ NH ₃⁺ ][ O H ] [ C ₂ H ₅ NH ₂ ] K_ b = 10⁻⁵ 10⁻⁵ 10⁻³ =10⁻⁷

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