Question

Arrange the group of compounds and ions/ in order of increasing pH?

1) NH4Cl, H2SO4, NaOH,Na2CO3

2)H2Se,HI,H2S,NH3

3) HCLO, HClO3,CLO^-, HBrO

4) K2SO3, Ca(OH)2, HCL,HF

5) NH3, H3O+, OH^-, HF

Answer 1

Date: NHCl → salt of weak Bare (NHG on) and strong - aid acidic salt (pH <7) H₂ SOg strong acid Nach strong base Na coz salt of strong base (NaOH) and - weak a cid (H₂O₂) Basic salt Banc We know that pH L Basic nature - L idic nature order of ph H₂S og < NH₂ cl < Na, Coz< NaOH a strong acid weak weakly strongly acid Basic Rang Nho is basic gas HI is strong acid & H Se is more acidic than his but less than HI. . pH onder » HI <H₂ Se <H₂S < NH3 (3 acidic strength order ... co (HBrOL HO< HClO₃ :ph order Halo ₃ ( Hao LHBrO ceo — евий рай goone resonance more Base size. in Conjugate Base less acudie

@ Ca 104, strongly basic Hel - strong acid HF - weak acid kaso salt of strong acid (H₂SO) w and strong base ('koH) so gt id almost neutral. : pH onder HULHF L K SO < (OH)2 O acidic neutral Basic on » Basic strongly Hf - weak acid NH₂ → weakly Basic thot strongly acidic pH order Hot <HF Z NH₃ Lori