Question #90796

Na2b4o7 + X = H3BO3 what is X in this reaction ?
1) aq. Solution of Naoh
2) Dil. Hno3
3) Conc . H2so4
4) water

Expert's answer

Na2B4O7 + H2SO4 + 5H2O \to 4H3BO3 + Na2SO4

Answer: 3) Conc. H2SO4



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