1 g of a mixture of NaOH and `Na_2CO_3` and inert impurities was first titrated with phenolphthalein and `N//10HCl`, 17.5 mL of HCI was required at the end point. After this methyl orange was added and 2.5 mL of same HCI was again required . Find out percentage of NaOH and `Na_2CO_3` in the mixture.

A 2.0g mixture of Na_(2)CO_(3) and NaHCO_(3) suffered a loss of 0.12g on heating. Percentage of Na_(2)CO_(3) in the mixture-

2g of mixture of CaCO_(3) and MgCO_(3) on being treated with dilute HCl gives 536.84 mL of CO_(2) at 27^(@)C and 750 mm of Hg pressure. What is the composition of the mixture?

1g of a mixture containing Na_(2)CO_(3) and NaHCO_(3) in equal amounts is heated until a constant mass is obtained. Find the volume of CO_(2) gas liberated at STP.

1.37g of a mixture of Na_(2)CO_(3) and NaHCO_(3) was dissolved in water. The solution was titrated with 0.5(M) HCl solution first with phenolphthalein followed by methyl orange indicator. The first and second titrations required 10 mL and 30mL of acid solution respectively. calculate the amounts (in g) of Na_(2)CO_(3) and NaHCO_(3) present in the mixture.

A mixture of NaCI and Na_2CO_3 is given. On heating 12 g of the mixture with dil. HCI. 2.241 g of CO_2 is evolved at normal temperature. Calculate the amounts of each in the mixture

A mixture contains 1.0 mole each of NaOH, Na2CO3 and NaHCO3. When half of mixture is titrated with HCI.it required x mole of HCI in presence of phenolphthalein. In another experiment, half of mixture required y mole of same HCI in presence of methyl orange. Find the value of(x + y)

1.5g of a mixture of CaCO_(3) and MgCO_(3) , on ignition, produces 360mL of CO_(2) at STP. Calculate the percentage composition of the mixture.

0.76 g of a mixture of hydrogen and oxygen gases has a volume of 2L temperature of 300 K and pressure of 10^5 N.m^-2 . Find out the individual masses of hydrogen and oxygen in the mixture.

0.804 g sample of iron was dissolved in acid , Iron was reduced to +2 state and it required 47.2 mL of 0.112 N KMnO_4 solution for titration. Calculate the percentage of iron and Fe_3O_4 in the ore.

At 700 K, CO_2 and H_2 react to form CO and H_2O . For this process K is 0.11. [fa mixture of 0.45 mole of CO_2 and 0.45 mole of H_2 is heated to 700 K, then After equilibrium is reached another 0.34 mole of CO_2 and 0.34 mole of H_2 are added to the reaction mixture. Find the composition of the mixture at the new equilibrium state. (Assume volume to be 1 dm^3 )