Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 189

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In pure $HCOOH$ liquid, concentration of ${HCOO}^{-} = 10^{- 3} M$ at $27 ° C$ . What is the self ionisation constant at $27 ° C (K = [{HCOOH}_{2}^{+} (HCOO)])$

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Important Questions on Equilibrium

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 190

Given: $HF + H_{2} O \overset{Ka}{⇋} H_{3} O^{+} + F^{-}$

$F^{-} + H_{2} O \overset{K_{b}}{⇌} HF + {OH}^{-}$

Which relation is correct?

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 191

Which of the following is incorrect?

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 192

The

[{OH}^{-}]

in

100 mL

of

0.016 M HCl

(aq) is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 193

How many moles of

NaOH

must be removed from one litre of aqueous solution to change its

pH

from

12

to

11

?

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 194

Which statement/relationship is correct?

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 195

Upon mixing equal volume of two solutions of strong acids having

pH

values

2 and 4

resulting solution will have

pH

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 197

Upon mixing equal volume of a strong acid solution (

HA

) and a strong base

(BOH)

solution,

pH

of resulting solution:

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Alpha Question Bank for Engineering: Chemistry>Chapter 5 - Equilibrium>Exercise-1>Q 198

Which of the following solutions will have

pH

close to

1

?