New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Ionic Equilibrium question

2023 · 8 Apr · Shift 1 · Q18

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Chemistry
Ionic Equilibrium
2023 · 8 Apr · Shift 1 · Q18

Ionic Equilibrium question

2023 · 8 Apr · Shift 1 · Q18

JEE MainChemistryIonic EquilibriumNumerical+4 / −1

The titration curve of weak acid vs. strong base with phenolphthalein as indictor) is shown below. The

\mathrm{K}_{\text {phenolphthalein }}=4 \times 10^{-10}

. Given:

\log 2=0.3

JEE Main 2023 (Online) 8th April Morning Shift Chemistry - Ionic Equilibrium Question 26 English

The number of following statement/s which is/are correct about phenolphthalein is

\underline{\hspace{2cm}}

A. It can be used as an indicator for the titration of weak acid with weak base. B. It begins to change colour at

\mathrm{pH}=8.4

C. It is a weak organic base D. It is colourless in acidic medium

Numerical answer

More from Ionic Equilibrium

The solubility product of $BaSO_{4}$ is $1 \times 1 0^{- 10}$ at $298 K$ . The solubility of $BaSO_{4}$ in $0.1 M K_{2} SO_{4} (aq)$ solution is $\times 1 0^{- 9} g L^{- 1}$ …2023 · Numerical
$25 mL$ of silver nitrate solution (1M) is added dropwise to $25 mL$ of potassium iodide $(1.05 M)$ solution. The ion(s) present in very small quantity in the solution is/are :2023 · MCQ
An analyst wants to convert $1 L HCl$ of $HCl$ to a solution of $HCl$ of $pH 2$ . The volume of water needed to do this dilution is $mL$ . (Nearest integer)2023 · Numerical
$25.0 mL$ of $0.050 M Ba (NO_{3})_{2}$ is mixed with $25.0 mL$ of $0.020 M NaF . K_{Sp}$ of $BaF_{2}$ is $0.5 \times 1 0^{- 6}$ at $298 K$ …2023 · Numerical
20 mL of $50 mL$ is added to $50 mL$ of $0.1 M$ acetic acid solution. The $pH$ of the resulting solution is $\times 1 0^{- 2}$ (Nearest integer) Given : $pKa (CH_{3} COOH) = 4.76$ …2023 · Numerical
Which of the following statement(s) is/are correct? (A) The $pH$ of $1 \times 1 0^{- 8} M HCl$ solution is 8 . (B) The conjugate base of $H_{2} PO_{4}^{-}$ is $HPO_{4}^{2 -}$ . (C) $K_{w}$ …2023 · MCQ
The dissociation constant of acetic acid is $x \times 1 0^{- 5}$ . When 25 mL of 0.2 $M C H_{3} COONa$ solution is mixed with 25 mL of 0.02 $M C H_{3} COOH$ solution, the pH of the resultant solution is found to be equal to 5. The…2023 · Numerical
If the pKa of lactic acid is 5, then the pH of 0.005 M calcium lactate solution at 25 $\times$ C is $\times$ 10 $^{- 1}$ (Nearest integer) Includes diagram2023 · Numerical