The percentage of pyridine (C 5 H 5 N) that forms pyridinium ion (C 5 H 5 N*H) in a 0.10 M aqueous pyridine solution ( K b for C 5 H 5 N = 1.7 x 10 -9 ) is:

# Medical

The percentage of pyridine (C₅H₅N) that forms pyridinium ion (C₅H₅N*H) in a 0.10 M aqueous pyridine solution (K_b for C₅H₅N = 1.7 x 10^-9) is

Option 1)
0.0060%

Option 2)
0.013%

Option 3)
0.77%

Option 4)
1.6%

Answers (10)

P prateek

Relation between Ka and Kb -

$K_{a}\times K_{b}=K_{W}$

$or\:P(K_{a})+P(K_{b})=P(K_{W})=14$ $(at\:298K)$

- wherein

$K_{a}=dissociation \:constant\:of\:acid$

$K_{b}=dissociation \:constant\:of\:base$

$K_{W}=ionic \:product\:of\:water$

$K_{a} =\frac{K_{w}}{K_{e}}$ $K_{a} =\frac{K_{w}}{K_{e}}\: = \frac{10^{-14}}{1.7\times 10^{-9}} = 5.8\times 10^{-6}$

$C_{5}H_{5}N + H_{2}O$ $\Leftrightarrow$ $C_{5}H_{5}NH+C_{5}H_{5}NH ^{\left ( + \right )} + OH^{\left ( - \right )}$

$1-x$ $x$ $x$

$5.8\times 10^{-6} = x^{2}$

$x=7.6\times 10^{-4}$

% of pyridie $= \frac{7.6\times 10^{-4}\times 100}{0.1}$ $= 0.76$

Ulnser is 3 Chanage eusur to 3

Option 1)

0.0060%

Incorrect

Option 2)

0.013%

Correct

Option 3)

0.77%

Incorrect

Option 4)

1.6%

Incorrect

S S. Moulika

Answer 1

R Ranjith

0.77

A Angel Anna Jiby

Option 2

D Dheerendra Pratap Singh Chauhan

K Khan vahidunnisha

T talhask2002

Option 3

S Shubhrajit Nayak

0.013 %

L lakshita malvannan

W www.jananieswaran2004

0.013%

Exams

Colleges

Predictors

Resources

Quick links

Quick Links

Exams

Colleges

Resources

Colleges

Resources

Exams

Exams

Colleges

Predictor

Resources

Other Exams

Exams

Resources

Upcoming Events

Exams

Ranking

Products & Resources

NCERT Solutions

Exams

Resources

Exams

Colleges

Predictors

Resources

Exams

Colleges

Predictors

Resources

Online Courses

Products

Engineering Preparation

Medical Preparation

Exams

Colleges

Predictors

Resources

Resources

Exams

Colleges

Predictors

Exams

Predictors

Colleges

Resources

Exams

Colleges

Resources

Exams

Resources

The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N*H) in a 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 x 10-9) is Option 1) 0.0060% Option 2) 0.013% Option 3) 0.77% Option 4) 1.6%

Similar Questions

Latest Asked Questions

Most Viewed Questions

Preparation Products

Knockout NEET May 2024

Knockout NEET May 2025

Knockout NEET Aug 2021 (One Month)

Knockout NEET Aug 2021

Test Series NEET Aug 2021

Ask Question

Welcome Back :)

Register to post Answer

Welcome Back :)

The percentage of pyridine (C₅H₅N) that forms pyridinium ion (C₅H₅N*H) in a 0.10 M aqueous pyridine solution (K_b for C₅H₅N = 1.7 x 10^-9) is

Option 1)
0.0060%

Option 2)
0.013%

Option 3)
0.77%

Option 4)
1.6%