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What is the hydrogen ion and hydroxide ion concentration for a pOH of 3.557? Is the solution an acid or a base?​

User AlphaOmega
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2 Answers

4 votes

Answer:

Hydrogen ion concentration is 2.773E-4Mole per DM3

Hydroxide ion concentration is 4.093E-11

It is an acid

Step-by-step explanation:

PH(H3O)=-LogH3O

PH=3.557

H3O=antilog of -3.557

antilog of -3.557=antilog (0.443 -4)

antilog0.443 ×antilog -4=2.773E-4mole per DM3.

(H3O)(OH)=10^-14

H30=2.773×10^-14

OH= 1.00E-14/2.773E-4

=4.093E-11

it is an acid since the concentration of hydrogen ion is more than the hydroxide ion

User David Harks
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8.4k points
5 votes

Answer:


3.606* 10^(-11) M is the hydrogen ion concentration.

0.0002773 M is the hydroxide ion concentration.

The solution has pH value more than 7 which means that it is base.

Step-by-step explanation:

The pH of the solution is defined as negative logarithm of hydrogen ions concentration in a solution. Lower the value of pH more acidic will the solution.

Mathematically written as:


pH=-\log[H^+]

The pOH of the solution is defined as negative logarithm of hydroxide ions concentration in a solution. Lower the value of pOH more alkaline will the solution.

Mathematically written as:


pOH=-\log[OH^-]

The sum of ph and pOH is equal to 14.

pH + pOH = 14

We have:

Solution with pOH = 3.557

The pH of the solution = 14 - pOH = 10.443


pH=-\log[H^+]


10.443=-\log[H^+]


[H^+]=3.606* 10^(-11) M


3.606* 10^(-11) M is the hydrogen ion concentration.


pOH=-\log[OH^-]


3.557=-\log[OH^-]


[OH^-]=0.0002773 M

0.0002773 M is the hydroxide ion concentration.

The solution has pH value more than 7 which means that it is base.

User Rahul Tokase
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7.6k points