Question: 1. Write the molecular, total ionic and net ionic equation of the reaction. [02] BaCl2(aq) +Na2SO4(aq) BaSO4(s) + 2NaCl(aq) 2. Classify each of the following

1. Write the molecular, total ionic and net ionic equation of the reaction. [02] BaCl2(aq) +Na2SO4(aq) BaSO4(s) + 2NaCl(aq) 2. Classify each of the following species in aqueous solution as a Brnsted acid or base: (a) HBr, (b) NO2 , (c) HCO3 [01] 3. Use oxidation numbers to decide whether the following is a redox reaction. If so, then identify the oxidizing agent and the reducing agent. 2Al(s)+3H2SO4(aq)Al2(SO4)3(aq)+3H2(g) [01] 4. Calculate the oxidation number of the underline atoms. [01] (a) H2SO4 (b) K2Cr2O7 (c) H2CO3

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