Indicators and Acid-base Titrations

$4$-methyl benzene sulphonic acid reacts with sodium acetate to give

When a weak acid is titrated with a weak base, what is the $\text{pH}$ At the equivalence point?

Is Phenolphthalein and methyl orange weak acid and weak base explain it?

According to Ostwald's theory of acid-base indicators, the colour change in titration is due to the ionisation of the acid-base indicator.

According to quinonoid theory, the acid-base indicators exist in two tautomeric forms having different structures.

Explain the quinonoid theory of acid-base indicators.

Phenolphthalein does not act as an indicator for the titration between:

The indicator used in the titration of sodium carbonate with sulphuric acid is:

The suitable indicator for strong acid and weak base is:

Which is/are correct statements?

(i) In any strong acid solution, the concentration of $\left[{\mathrm{OH}}^{-}\right]$ will be zero.

(ii) If $△\mathrm{G}°$ of a reaction is positive, then the reaction will not proceed at all, in the forward direction for any concentrations of reactants and products.

(iii) Titration curves are drawn for (about the figure shown).

(a)  $1 \mathrm{M} \mathrm{HCl} \left(50 \mathrm{mL}\right)$  with $1 \mathrm{M} \mathrm{NaOH}$ and(b) $0.01 \mathrm{M} \mathrm{HCl} \left(50 \mathrm{mL}\right)$ with $0.01 \mathrm{M} \mathrm{NaOH}$ on the same graph paper they look like

What is the volume of hydrogen chloride(HCl) required for complete reaction of sodium bicarbonate(NaHCO₃) in a double titration method, for the mixture of sodium bicarbonate(NaHCO₃) and sodium carbonate (Na₂CO₃).If the volume of hydrogen chloride(HCl) used at phenolphthalein indicator end point was x ml and further of Methyl orange indicator end point was y ml.

Cotyledons are also called-

An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?

The colour change of an indicator $\text{HIn}$ in acid base titration is given below

Which of the following statement is correct?

A $100\mathrm{ }\mathrm{mL}$ solution contained ${\mathrm{Na}}_2{\mathrm{CO}}_3$ and ${\mathrm{NaHCO}}_3$ . $25\mathrm{ }\mathrm{mL}$ of the solution required $5\mathrm{ }\mathrm{mL}$ of $\mathrm{N}/10$ HCl for

neutralization using phenolphthalein as an indicator. Addition of methyl orange required a further $15\mathrm{ }\mathrm{mL}$ of the

acidic for neutralization. The amount of ${\mathrm{Na}}_2{\mathrm{CO}}_3$ present in the solution is

When $KMn{O}_4$ solution is titrated with a solution containing $F{e}^{2+}$ ion, the indicator used in this titration is

Methyl orange gives red colour in

Which indicator can be used in the titration of strong acid and strong base?

Conductometric titration curve of an equimolar mixture of HCl and HCN with NaOH (aq) is

The pink colour of phenolphthalein in alkaline medium is due to