Question

In: Chemistry

Determine the Ph 0.120 M NaClO and 4.50×10−2 M KI Express your answer using two decimal...

Determine the Ph

0.120 M NaClO and 4.50×10⁻² M KI

Express your answer using two decimal places.

Expert Solution

KI is a slat of strong HI and strong base . so it will not produce H+ and OH- , so no effect on PH

NaClO----------> Na⁺ + OCl^-

OCl^- + H2O -------> HoCl + OH^-

I 0.12 0 0

C -x +x +x

E 0.12-x +x +x

Kb = [HOCl][OH-]/[OCl-]

Kb = Kw/Ka

= 1*10^-14/3*10-8

= 3.3*10^-7

Kb = [HOCl][OH-]/[OCl-]

3.3*10^-7 = x*x/0.12-x

3.3*10^-7*(0.12-x) = x²

x = 0.000198

[OH-] = x = 0.000198M

POH = -log[OH-]

= -log0.000198

= 3.703

PH = 14-POH

= 14-3.703

= 10.297 >>>> answer

queen_honey_blossom answered 1 year ago

Determine the pH of each of the following two-component solutions. 0.110 M NaClO and 5.50×10−2 M...

Determine the pH of each of the following two-component solutions. 0.110 M NaClO and 5.50×10−2 M KI Express your answer using two decimal places.

what is the pH of 0.120 M Fe(NO_3)_3 (Ka of Fe^3+=3.00x10^-3)? Express your answer to two...

what is the pH of 0.120 M Fe(NO_3)_3 (Ka of Fe^3+=3.00x10^-3)? Express your answer to two decimal places.

1.5×10−2 M Sr(NO3)2 Express your answer using two significant figures. Part B 1.5×10−2 M NaF Express...

1.5×10−2 M Sr(NO3)2 Express your answer using two significant figures. Part B 1.5×10−2 M NaF Express your answer using two significant figures.

Determine the pH of each of the following solutions. A) 2.00×10−2 M HClO4 B) 0.120 M...

Determine the pH of each of the following solutions. A) 2.00×10−2 M HClO4 B) 0.120 M HClO2 C) 3.5×10−2 M Sr(OH)2 D) 8.60×10−2 M KCN E) 0.150 M NH4Cl

1)Determine the pH of each solution. Part A 0.20 M KCHO2 Express your answer to two...

1)Determine the pH of each solution. Part A 0.20 M KCHO2 Express your answer to two decimal places. Part B 0.21 M CH3NH3I Express your answer to two decimal places. Part C 0.22 M KI Express your answer to two decimal places. 2) Part A Rank the following compounds in order of decreasing acid strength using periodic trends. Rank the acids from strongest to weakest. To rank items as equivalent, overlap them. LiH, H2O, HCl, HBr

Calculate the pH of each solution. Part A [H3O+] = 7.7×10−8 M Express your answer using...

Calculate the pH of each solution. Part A [H3O+] = 7.7×10−8 M Express your answer using two decimal places. pH = Part B [H3O+] = 7.0×10−7 M Express your answer using two decimal places. pH = Part C [H3O+] = 4.2×10−6 M Express your answer using two decimal places. pH = Part D [H3O+] = 6.4×10−4 M Express your answer using two decimal places. pH = Part E [OH−] = 9.9×10−7 M Express your answer using two decimal places. Part...

Part A Calculate the pH in 0.020 M H2CO3 (Ka1=4.3×10−7; Ka2=5.6×10−11). Express your answer using two...

Part A Calculate the pH in 0.020 M H2CO3 (Ka1=4.3×10−7; Ka2=5.6×10−11). Express your answer using two decimal places. pH = SubmitMy AnswersGive Up Part B Calculate the concentrations of all species present (H2CO3, HCO−3, CO2−3, H3O+ and OH−) in 0.020 M H2CO3. Express your answers using two significant figures. Enter your answers numerically separated by commas. [H2CO3], [HCO−3], [CO2−3], [H3O+] and [OH−] = M

Determine the [OH−] of a solution that is 0.150 M in CO32−. Express your answer using...

Determine the [OH−] of a solution that is 0.150 M in CO32−. Express your answer using two significant figures. [OH] = M Part B Determine the pH of a solution that is 0.150 M in CO32−. Express your answer to two decimal places. pH = Part C Determine the pOH of a solution that is 0.150 M in CO32−. Express your answer to two decimal places. pOH =

Determine the pH of each solution. a) 0.0200 M HClO4 b)0.120 M HClO2 (for HClO2, Ka=1.1×10−2)...

Determine the pH of each solution. a) 0.0200 M HClO4 b)0.120 M HClO2 (for HClO2, Ka=1.1×10−2) c)0.050 M Sr(OH)2 d)0.0856 M KCN (for HCN, Ka=4.9×10−10) e)0.165 M NH4Cl (for NH3, Kb=1.76×10−5)

What is the pH of a 0.445 M ammonia solution? Express your answer numerically to two...

What is the pH of a 0.445 M ammonia solution? Express your answer numerically to two decimal places.