When 100mL solution of `NaOH and NaCO_(3)` was first titrated with N/10 HCl in presence of HPh, 17.5mL were usedtill end point is obtained. After this end point MeOH was added and 2.5mL of same HCl were required to attain new end point. The amount NaOH in mixture is:

200 " mL of " a solution of a mixture of NaOH and Na_2CO_3 was first titrated with 0.1 M HCl using phenolphthalein indicator. 17.5 " mL of " HCl was required for the same HCl was again required for next end point. Find the amount of NaOH and Na_2CO_3 in the mixture.

40 mL 0.05 M solution of sodium sesquicarbonate dehydrate (Na_(2)CO_(3).NaHCO_(3).2H_(2)O) is titrated against 0.05 M HCl solution, x mL of acid is required to reach the phenolphthalein end point while mL of same acid were required when methyl organe indicator was used in a separate titration. Which of the following is (are) correct statements? a. y-x = 80 mL b. y+x = 160 mL c. If the titration is started with phenolphthalein indicator and methyl orange is added at the end point, 2 x mL of HCl would be required further to reach the end point d. If the same volume of same solution is titrated against 0.10 M NaOH, x//2 mL of base would be required

When 40mL of a 0.1 M weak base, BOH is titrated with 0.01M HCl , the pH of the solution at the end point is 5.5 . What will be the pH if 10mL of 0.10M NaOH is added to the resulting solution ?

A solution of weak acid HA was titrated with base NaOH. The equivalent point was reached when 40 mL. Of 0.1 M NaOH has been added. Now 20 mL of 0.1 M HCl were added to titrated solution, the pH was found to be 5.0 What will be the pH of the solution obtained by mixing 20 mL of 0.2 M NaOH and 20 mL of 0.2 M HA?

A mixture contains 1.0 mole each of NaOH, Na_(2) CO_(3) and NaHCO_(3) . When half of mixture is titrated with HCl ,it required x mole of HCl in presence of phenolphthalein. In another experiment ,half of mixture required y mole of same HCl in presence of methyl orange. Find the value of (x+y).

Some amount of NH_4 CI was boiled with 50ml of 0.75 N NaOH solution till the reaction was complete. After the completion of the reaction 10 ml of 0.75 N H_2 SO_4 was required for the neutralization of the remaining NaOH . The amount of NH_4 CI taken was:

100 ml of 0.01 M H_2 SO_4 is titrated against 0.2 M Ca (OH)_2 , volume of Ca (OH)_2 required to reach end point will be :

50 " mL of " a solution containing 1 g each of Na_2CO_3 , NaHCO_3 and NaOH was titrated with N HCl. What will be the titre value if: (a). Only phenolphthalein is used as an indicator?

A mixture containing Na_(2)CO_(3) , NaOH and inert matter weighs 0.75 g. When the aqueous solution is titrated with 0.50 N HCl, the colour of the phenolphthalein disappears when 21.00 mL of the acid has been added. Methyl orange is then added and 7.00 mL more of the acid is required to give a red colour to the solution. The % of Na_(2)CO_(3) is:

NaoH and Na_(2)CO_(3) are dissolved in 200 ml aqeous solution. In the presence of phenolpthaleim indicator, 17.5 ml of 0.1 HCl are used to titrated this solution. Now methyl orange is added in the same solution titrated and requires 2.5 ml of the same HCl. Calculate the mass of NaOH & NaCO_(3) .