KNO 2 potassium nitrite is a salt that is very soluble in water. Its dissolution forms the
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KNO2 potassium nitrite is a salt that is very soluble in water. Its dissolution forms the species K + and NO2-. Potassium sulphate (K2SO4) is a salt that is very soluble in water. dissolution forms the species K + and SO4 2-
1) Write the balance equations of the dissolution of KNO2 and K2SO4 2) Which mass of KNO2 should be weighed to prepare a solution S1 of 100 mL or the concentration K + = 0,1 mol / L ? 3) Which mass of K2SO4 should be weighed to prepare a S2 solution of 250 mL or the concentration K + = 0.2 mol / L ? 4) What is the mass concentration of KNO2 in S1 ?
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