`20mL` of `0.1M` solution of compound `Na_2CO_3 .NaHCO_3. 2H_2O` is titrated against `0.05 M HCI . x mL` of `HCI` is used when phenolphthalein is used as an indicator and y mL of HCI is used when methly orange is the indicator in two separate titrations. Hence `(y-x)` is :

20 mL of 0.1 M solution of compound NaCO_(3).NaHCO_(3).2H_(2)O is titrated against 0.05 M HCL. X mL of HCL is used when phenolphthalein is used as an indicator and y mL of HCL is used when methly orange is the indicator in two separate titrations. Hence (y-x) is:

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

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?

0.1g of a solution containing Na_2 CO_3 and NaHCO_3 requires 10mL of 0.01 N HCI for neutralization using phenolphthalein as an indicator. mass % of Na_2 CO_3 in solution is :

A 100 ml mixture of Na_(2)CO_(3) and NaHCO_(3) is tittrated against 1 M HCl. If v_(1)L and v_(2)L are consumed when phenolphthalein and methyl orange are used as indicators respectively in two separate titrations, which of the following is true form molarities in the original solution.

A sample of NaHCO_(3) + Na_(2)CO_(3) required 20 ml of HCl using phenolphthalein as indicator and 35ml more required if methyl orange is used as indicator . Then molar ratio of NaHCO_(3) to Na_(2)CO_(3) is

0.1g of a solution containing Na_(2)CO_(3) and NaHCO_(3) requires 10mL of 0.01 N HCl for neutralization using phenolphthalein as an indicator, mass% of Na_(2)CO_(3) in solution 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.

In the mixture of (NaHCO_3 + Na_2CO_3) , volume of HCI required is x mL with phenolphthalein indicator and y mL with methly orange indicator in the same titration. Hence, volume of HCI for complete reaction of Na_2CO_3 is : (a) 2x (b) y (c) x/2 (d) (y-x)

A mixutre solution of KOH and Na_2CO_3 requires 15 " mL of " (N)/(20) HCl when titrated with phenolphthalein as indicator.But the same amoound of the solutions when titrated with methyl orange as indicator requires 25 " mL of " the same acid. Calculate the amount of KOH present in the solution.