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Acids are substances that addhydronium ions to a solution. Whichof the following is a hydronium ion?NO3H30+lон-H20NH4+

User Aneef
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The hydromium ion is formed by the protonation of water (H2O), this proton is given by hydrogen, that is, the hydronium ion with a positive charge will have the following formula: H3O+

Answer: Second option. H3O+

User Rockdaboot
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