[" 4.A solution containing "4.2g" of KOH and "Ca(OH)_(2)" is neutralized by an acid.It consumes "0.1equivalent" of acid,"],[A" calculate the percentage composition of the sample."]

A solution containing 4.2 g of KOH and Ca(OH)_(2) is neutralised by an acid. If it consumes 0.1 g equivalents of the acid, calculate the composition of the sample.

Calculate the percentage composition of Ca(NO_(3))_(2)

0.3 g of an acid is neutralized by 40 cm^(3) of 0.125 N NaOH. Equivalent mass of the acid is

0.24g sample of a compound of oxygen and boron was found by analysis to contain 0.144g of oxygen and 0.096g of boron. Calculate the percentage composition of the compound by weight. (AS-1)

0.4 g of a mixutre containing sodium oxalate (Na_2C_2O_4) and potassium oxalate requires 50 " mL of " (M)/(60)K_2Cr_2O_7 solution in acidic medium for complete reaction. Calculate the percentage composition of the mixture.

0.4 g of a mixutre containing sodium oxalate (Na_2C_2O_4) and potassium oxalate requires 50 " mL of " (M)/(60)K_2Cr_2O_7 solution in acidic medium for complete reaction. Calculate the percentage composition of the mixture.

4.9 g of sulphuric acid contains 0.1 g of hydrogen, 1.6 g of sulphur and rest oxygen. Calculate the mass percentage composition of all the elements of sulphuric acid.