Titration

The indicator which is used in the titration of weak acid using a weak base is litmus solution.

Write a short note on redox titration.

Calculate the concentration of an unknown sodium hydroxide $\left(\mathrm{NaOH}\right)$ solution, if $20 {\mathrm{cm}}^3$ of $0.12 \mathrm{mol} {\mathrm{dm}}^{-3}$ hydrochloric acid $\left(\mathrm{HCl}\right)$ is needed to exactly neutralise $25 {\mathrm{cm}}^3$ of the sodium hydroxide solution.

State the indicator used in titration of strong acid and weak base.

State the indicator used in the titration of a weak acid and strong base.

Choose the correct answer from the given options(methyl orange / phenolphthalein / litmus)

Select an effective indicator for the titration of a weak acid with a strong base.

Which indicator will be most suitable for the titration of acetic acid vs $\mathrm{NaOH}$?

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-

When HCl(aq) is titrated with NaOH(aq) conductometrically then the graphical representation of the titration will be

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

A $0.1\mathrm{ }\mathrm{N}$ solution of ${\mathrm{Na}}_2{\mathrm{CO}}_3$ is titrated with $0.1\mathrm{ }\mathrm{N}$ $\mathrm{HCl}$ solution. The best indicator to be used is

Phenolphthalein is not a good indicator for titrating

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

An aqueous solution of 6.3 g of oxalic acid dihydrate(molar mass = 126.07 g/mol) is made up to 250 mL. The volume of 0.1 N NaOH required to completely neutralize 10 mL of this solution is -

In a double titration method, for the mixture of NaHCO₃ and Na₂CO₃, the volume of HCl used at phenolphthalein indicator end point was x ml and further of Methyl orange indicator end point was y ml. The volume of HCl for complete reaction of NaHCO₃ is -

$100\mathrm{ }\mathrm{m}\mathrm{l}$ of a given water sample require $20\mathrm{ }\mathrm{m}\mathrm{l}$ of $\left(\frac{\mathrm{N}}{10}\right)\mathrm{H}\mathrm{C}\mathrm{l}$ in the presence of methyl orange indicator. $100\mathrm{ }\mathrm{m}\mathrm{l}$ of the same water sample on separate titration require $50\mathrm{ }\mathrm{m}\mathrm{l}$ of $\left(\frac{\mathrm{N}}{10}\right){\mathrm{N}\mathrm{a}}_2\mathrm{ }{\mathrm{C}\mathrm{O}}_3$ for complete precipitation.

What is the permanent hardness of the water sample with respect to ppm of ${\mathrm{C}\mathrm{a}\mathrm{C}\mathrm{O}}_3?$

A $100\mathrm{ }\mathrm{m}\mathrm{l}$ solution of $0.1\mathrm{ }\mathrm{N}\mathrm{ }\mathrm{H}\mathrm{C}\mathrm{l}$ was titrated with $0.2\mathrm{ }\mathrm{N}\mathrm{ }\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ solution. The titration was discontinued after adding $30\mathrm{ }\mathrm{m}\mathrm{l}$of $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ solution. The remaining titration was completed by adding $0.25\mathrm{ }\mathrm{N}\mathrm{ }\mathrm{K}\mathrm{O}\mathrm{H}$ solution. The volume of $\mathrm{K}\mathrm{O}\mathrm{H}$ required for completing the titration is

$100\mathrm{ }\mathrm{m}\mathrm{L}$ of a mixture of $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ and ${\mathrm{N}\mathrm{a}}_2{\mathrm{S}\mathrm{O}}_4$ is neutralized by $10\mathrm{ }\mathrm{m}\mathrm{L}$ of $0.5\mathrm{ }\mathrm{M}\mathrm{ }{\mathrm{H}}_2{\mathrm{S}\mathrm{O}}_4$. The amount of $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ in $100\mathrm{ }\mathrm{m}\mathrm{L}$ solution is -