Which of the following pair of aqueous solutions when mixed will not form a precipitate?
A. FeCl2 (aq) and NaOH (aq)
B. Ni(NO3)2 (aq) and Li2(CO3) (aq)
C. KBr (aq) and AgNO3 (aq)
D. (NH4)2 CO3 (aq) and KBr (aq)
E. All of them
1 answer
Go to Google and type in solubility of salts. You will find, for example, that Fe(OH)2 is not soluble so A will form a ppt. Likewise, C will form AgBr ppt. So A and C are not the right answers.