Use of double indicators in neutralisation & Percentage purity

Stoichiometry - Use Of Double Indicator In Neutrralization Reaction

Stoichiometry - Use Of Double Indicator In Neutrralization Reaction - Case 2

Stoichiometry - Use Of Double Indicator In Neutrralization Reaction Advanced

0.50 g sample of impure CaCO_3 is dissolved in 50 ml of 0.0985 (N) HCl. After the reaction is complete, the excess HCl required 6 ml of 0.105N NaOH for neutralisation. The percentage purity of CaCO_3 in the sample is

Back Titration and Use of Double Indicators in Neutralisation

Stoichiometry - Use Of Double Indicator To Find Percentage Of Compounds In Mixture

Which is a double displacement as well as neutralisation reaction?

6.5 g mixture of sample containing KOH, NaOH, and Na_2CO_3 was dissolved in H_2O and the volume was made up to 250 mL. 25 " mL of " this solution requires 26.23 " mL of " 0.5 N H_2SO_4 using methyl orange as indicator, and 19.5 " mL of " same H_2SO_4 using phenolphathalein as indicator for complete neutralisation. Calculate the percentage of KOH, NaOH, and Na_2CO_3 in the sample.