Download App

6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
MCQ
If degree of ionisation is $0.01$ of decimolar solution of weak acid $HA$ then $pKa$ of acid is
  • ✓
    $5$
  • B
    $7$
  • C
    $2$
  • D
    $3$
✓

Answer

Correct option: A.
$5$
a
${K_a} = C{ \propto ^2} = 0.1 \times {(0.01)^2} = {10^{ - 5}}$

$pKa = 5$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 6.2. Equilibrium - II (icon Equilibrium)→6.2. Equilibrium - II (icon Equilibrium) — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Assign $A, B, C, D$ from given type of reaction. $NaI + Mn{O_2} + {H_2}S{O_4}\left( {conc.} \right) \to MnS{O_4} + {I_2} \uparrow $
→
If a reaction is carried out in acidic medium then which is used to balance the equation?
→
A process will be spontaneous at all temperatures if
→
How many molecules of $H _2 O$ are present in one litre water?
→
Match the species given in Column $I$ with the shape given in column $II$ and mark the  correct option:-

Column-$I$ Column-$II$ (Shape)
$(A) \,SF_4$  $(1)$ Tetrahedral
$(B)\, BrF_3$  $(2)$ Pyramidal
$(C)\, BrO_3^-$ $(3)$ Sea-Saw shaped
$(D)\, NH_4^+$ $(4)$ Bent $T-$ shaped

 

→
The region in the electromagnetic spectrum where the Balmer series lines appear is
→
If $pH$ of $A,\,\,B,\,\,C$and $D$ are $9.5, 2.5, 3.5 $ and $5.5$ respectively, then strongest acid is
→
During the formation of a molecular orbital from atomic orbitals, probability of electron density is
→
Which of the following form cyclic silicones on hydrolysis
→
The $\ce{pH}$ of a dilute solution of acetic acid was found to be $4.3$ The addition of a small crystal of sodium acetate will cause $\ce{pH}$ to:
→