About half of the sodium carbonate produced is used in makin…

About half of the sodium carbonate produced is used in making glass products because it lowers the melting point of sand, the major component of glass. When sodium carbonate is added to water it hydrolyzes according to the following reactions.   CO32-(aq) + H2O(l)     HCO3-(aq) + OH-(aq) K1   HCO3-(aq) + H2O(l)     H2CO3(aq) + OH-(aq)   K2                       Consider the following reaction   2CO32-(aq) + 4H2O(l)  2H2CO3(aq) + 4OH-(aq) K3   What is the value of K3?

An unknown compound in a mixture shows an Rf value of 0.75….

An unknown compound in a mixture shows an Rf value of 0.75. The result of this chromatographic experiment is given below. All the compounds A, B, C, and D are pure.Compound​​Distance to compound​Distance to solvent front​A​3.0 cm​4.0 cm​B​2.5 cm​4.0 cm​C​1.0 cm​4.0 cm​D​0.50 cm​4.0 cmIdentify the unknown compound.