Question
All please
What is the 0.0134 M NaOH base? The concentration (M) of the acid is 0.0102 B) 0.0204 D) 0.0051 ) 0.227 when aqueous so lutions of are mixed, a precipitate forms. 4) -A) KOH and Ba(NO3)2 B) NiBr2 and AgNO3 Nal and KBr K2SO4 and CrC13 Li2CO3 and CsI 5) Based on the Activity Series, which one of the reactions below will occur? A) 3Hg (I) + 2Cr(NO3)3 (aq) 311g(NO3)2 + 2Cr(s) C) 3FeBr2 (aq) + 2Au (s) 3Fe(s) + 2AuBr3 (aq) E) 2AgNO3 (aq) + Pb (s) 2Ag (s) + Pb(NO3)2 (aq) _p) Zn (s) Mn12(aq) Zn 12 (aq) Mn (s) + + D) SnCl2 (aq) + Cu (s) Sn (s) + CuCl2 (aq) ) In which species does sulfur have a zero oxidation number? D) SOB) A) SF2 B) H2S(8 C) S(s) E) SO2(8) 7) Which reaction has a solid metal that is oxidized from "0 "oxidation state (as a reactant) to +1 oxidation state as a product? A) Ca (s) + H2SO4 (aq) - CaSO4 (aq) + H12 (g) (B)2Al (s) + 6HBr (aq) 2AlBr3 (aq) + 3H2 (g) C) 2Ag (s) + 2HNOg (aq)--2AgNO3 (aq) + H2 (g) D) Mg (s) + 2HCl (aq) MgCl2 (aq) + H2 (g) E) Zn (s) + 2H1 (aq) Zr12 (aq) + H2 (g)
Explanation / Answer
4. Option B, NiBr2 +2 AgNO3 = 2 AgBr (s) + Ni(NO3)2
5. Option E, a/c to activity series
6. Option C, since sulfur is in elemental state
7. Option C, since oxidation state of Ag changed form 0 to +1.