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4.) (20%) Which one of the following is an acid base reaction? a) C(s) + O2(g) → CO2(g) b) 2 HCl(aq) + Ca(OH)2(aq) + 2 H2O(1)
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Answer. Acid-Base Jean b ] 2 Herlead) tracoHlacao H2014) + cac/2 cap) - And Base water salt Acid & Base reads of eomol quobh]

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4.) (20%) Which one of the following is an acid base reaction? a) C(s) + O2(g)...
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