Determine whether each salt forms an acidic, basic, or neutral solution when dis

Question

Determine whether each salt forms an acidic, basic, or neutral solution when dissolved in water: KI; Ca(NO_3)_2; BaCl_2;. Determine whether each salt forms an acidic, basic, or neutral solution when it dissolves in water. NaI NH_4 NO_3 MgBr_2 Calculate the pH of a dihydrogen phosphate/hydrogen phosphate buffer prepared with the following concentration. (K_a for H_2 PO_4^- is 6.2 times 10^-8). Report your answer to three significant figures. 0.17 M NaH_2 PO_4 and 0.17 M Na_2 HPO_4: Calculate the pH of a dihydrogen phosphate/hydrogen phosphate buffer prepared with the following concentration. (K_a for H_2 PO_4^- is 6.2 times 10^-8). Report your answer to three significant figures. 7.3 M NaH_2 PO_4 and 7.3 M Na_2 HPO_4: Calculate the pH of a dihydrogen phosphate/hydrogen phosphate buffer prepared with the following concentration. (K_a for H_2 PO_4^- is 6.2 times 10^-8). Report your answer to three significant figures. 0.41 M NaH_2 PO_4 and 0.41 M Na_2 HPO_4:

Explanation / Answer

Q1.

KI = K+ + I-

those are ions from storng acid/base, this must be neutral

Ca(NO3)2 = Ca+2 + 2NO3-

Ca+2 + 2H2O <--> Ca(OH)2 + 2H+ --> this is acidic

BaCl2 --> Ba+2 + 2Cl-

Ba+2 + H2O --> Ba(OH)2 + 2H+, acidic

Q2

NaI --> neutral

NH4NO3 --< NH4+ and NO3-

NH4+ + H2O = NH3 + H3O+, acidic

MgBr2 --> slightly acidc

5314.6

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