Write the molecular ionic equations of interaction NaOH + H2SO4.

2NaOH + H2SO4 = Na2SO4 + 2H2O
2Na + + 2OH- + 2H + + SO4 = 2Na + + SO4- + 2H2O
Then we shorten and get the shortened equation:
2H + + 2OH- = 2H2O



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