Find the concentration of h+ ions at a ph = 11 and
ph = 6. then divide the concentration of h+ ions at a
ph = 11 by the of h+ ions at a ph = 6. record your answer in table c.

what is the concentration of h+ ions at a ph = 11?

mol/l

what is the concentration of h+ ions at a ph = 6?

mol/l

how many fewer h+ ions are there in a solution at a
ph = 11 than in a solution at a ph = 6?

Explanation:

the pH of the solution defined as negatuve logarithm of ion concentration.

1. Hydrogen ion concentration when pH of the solution is 11.

..(1)

At pH = 11, the concentration of ions is .

2. Hydrogen ion concentration when the pH of the solution is 6.

..(2)

At pH = 6, the concentration of ions is .

3. On dividing (1) by (2).

The ratio of hydrogen ions in solution of pH equal to 11 to the solution of pH equal to 6 is .

4. Difference between the ions at both pH:

This means that Hydrogen ions in a solution at pH = 7 has ions fewer than in a solution at a pH = 6

for table C

Explanation:

What is the concentration of H+ ions at a pH = 11?

1.  ⇒ 0.00000000001 mol/L  

What is the concentration of H+ ions at a pH = 6?

2.  ⇒ 0.000001 mol/L  

How many fewer H+ ions are there in a solution at a

pH = 11 than in a solution at a pH = 6?

3.  ⇒ 100,000

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-