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kindly post different questions separately. please rate
hydronium on = H30+ [H3O+] = 3,50 X 10 -3 M At 25°C [H3O+] [OH-] = KW = 10-14 [OH-] = 10-14 - 10-14 [OH-] 3.50 x 10-3 = 2.86 x 10-12M in an aqueoca solution is 2186 *10-12 M Hence, hydroxide ion concentration So, option A) is conect
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