[6.29" of a sample contaning "Na_(2)CO_(3)" ,NaHCO and non-valatile inert impurty on gentle heating loses "5%" of its "],[" welght due to reaction "2Na" Na_2 "CO_(2)" .COa "+CO_(2)" .Residued in water an formed "100mL],[" soluto and its "10ml" portion requires "7.5mL" of "0.2M" aquecus solution of complete precipitation of "],[" Deflomine welopt (in grams lotwer call the "c" planglement "]

6.2g of a sample containing Na_2CO_3, NaHCO_3 and non-volatile inert impurity on gentle heating loses 5% of its mass due to reaction 2NaHCO_3 rarr Na_2 CO_3 + H_2 O + CO_2 . Residue is dissolved in water and formed 100mL solution and its 10mL portion requires 7.5 mL of 0.2M aqueous solution of BaCI_2 for complete precipitation of carbonates. Determine mass (in gram) of Na_2 CO_3 in the original sample.

6.2g of a sample containing Na_2CO_3, NaHCO_3 and non-volatile inert impurity on gentle heating loses 5% of its mass due to reaction 2NaHCO_3 rarr Na_2 CO_3 + H_2 O + CO_2 . Residue is dissolved in water and formed 100mL solution and its 10mL portion requires 7.5 mL of 0.2M aqueous solution of BaCI_2 for complete precipitation of carbonates. Determine mass (in gram) of Na_2 CO_3 in the original sample.

6.2 g of a sample containing NaHCO_(3) , NaHCO_(3) and non -volatiale inert impurity on gentle heating loses 5% of its mass due to reaction 2NaHCO_(3)to Na_(2)CO_(3)+H_(2)O+CO_(2). Residue is dissolved in water and formed 100 mL solution and its 10 mL portion requires 7.5 mL of 0.2 M aqueous solution of BaCl_(2) for complete precipitation of carbonates. Determine mass (in gram) of Na_(2)CO_(3) in the original sample .

6.2 g of a sample containing NaHCO_(3) , NaHCO_(3) and non -volatiale inert impurity on gentle heating loses 5% of its mass due to reaction 2NaHCO_(3)to Na_(2)CO_(3)+H_(2)O+CO_(2). Residue is dissolved in water and formed 100 mL solution and its 10 mL portion requires 7.5 mL of 0.2 M aqueous solution of BaCl_(2) for complete precipitation of carbonates. Determine mass (in gram) of Na_(2)CO_(3) in the original sample .

6.2 gm of a sample containing Na_2CO_3, NaHCO_3 & non volatile impurity on gentle heating loses 5% of its weight due to the reaction 2NaHCO_3 rarr Na_2CO_3 + CO_2 + H_2O Residue is dissolved in water to form 100 ml solution & its 10 ml portion requires 7.5 ml of 0.2 M aqueous solution of BaCl_2 for complete precipitation of carbonates . What is the weight of Na_2CO_3 in gm in the origin sample ?

2.5 g of a sample containing Na_(2)CO_(3) , NaHCO_(3) and some non-volantile impurity on gentle heating loses 12% of its weight. Residue is dissolved in 100 mL water and its 10 mL portion required 15mL 0.1M aqueous solution of BaCl_(2) for complete precipitation of carbonates. Determine mass percentage of Na_(2)CO_(3) in the original sample?

A 200 mL sample of water requires 5 " mL of " (N)/(20)Na_2CO_3 solution for complete precipitation of Ca^(2+) and CaCO_3 . Calculate the hardness in ppm.

0.7 g "of" Na_(2)CO_(3).xH_(2)O were dissolved in water and the volume was made to 100 mL, 20 mL of this solution required 19.8 mL "of" N//10 HCl for complete neutralization. The value of x is: