Email
Chat with tutor
logo

Ask Questions, Get Answers

X
 
Questions  >>  JEEMAIN and NEET  >>  Chemistry  >>  Equilibrium
Answer
Comment
Share
Q)

$pK_{a1}$ and $pK_{a2}$ of $H_2CO_3$ are 6.38 and 10.26 respectively. The $pH$ of 1 M and 0.1 M $NaHCO_3$ are

(a) 8.32, 7.32

(b) 7.32, 8.32

(c) 8.32, 8.32

(d) 7.32, 7.32

1 Answer

Comment
A)
Toolbox:
  • pH in this case is independent of concentration.
Answer: 8.32, 8.32
 
$pH = \frac{1}{2} [pK_{a1} + pK_{a2}] = \frac{1}{2}$ [6.38 + 10.26] = 8.32
Since, pH in this case is independent of concentration.
The pH of 1 M $NaHCO_3$ = pH of 0.1 M $NaHCO_3$ = 8.32

 

Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
Clay6 tutors use Telegram* chat app to help students with their questions and doubts.
Do you have the Telegram chat app installed?
Already installed Install now
*Telegram is a chat app like WhatsApp / Facebook Messenger / Skype.
...