Which solution will have the highest ph? the ka of hclo is 3.8 × 10−8.(a) a solution of 100 ml of water with 20 ml of 0.1 m naoh added.(b) a 100 ml buffer solution of 0.1 m hclo, 0.1 mclo− with 20 ml of 0.1 m hcl solution added.(c) a buffer solution of 0.1 m hclo, 0.1 m clo−.(d) a 100 ml buffer solution of 0.1 m hclo, 0.1 m clo− with 20 ml of 0.1 m naoh solution added.

sol. with highest  pH is sol.of 100 mL of water with 20 mL  of 0.1 M NaOH

Explanation:

A solution of 100 ml of water with 20 ml of 0.1 M NaOH

we know that

0.1(20) = M_2(120)

pOH = 1.77

pH = 14 - 1.77 = 12.23

A buffer solution of [/tex]0.1 M HClO, 0.1 M ClO^{-}[/tex]

pH = 7.42

Additio of strong base will increase the pH of buffer sol. But increase in pH is veery small

Additio of strong base will increase the pH of buffer sol. But increase in pH is small

Additio of strong acid will lower the pH of buffer sol. But increase in pH is veery small

Therefore sol. with highest  pH is sol.of 100 mL of water with 20 mL  of 0.1 M NaOH

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying