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

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.