Question

Calculate the ph of 1.0 into 10 to the power minus 8 m solution of hcl

Answer 1

HCl is a strong acid and is completely ionized

1.0 x 10-8 M HCl is very dilute acid it produce less H+ ion concentration then water so in that case ionization of water is consider i.e. the concentration of H+ from water cannot be neglected

pH value of 1.0×10^8M HCl is 6.98

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Answer 2

The pH of the solution is 8

Explanation:

We are given a chemical compound which is HCl

1 mole of HCl produces 1 mole of $H^+$ ions and 1 mole of $Cl^-$ ions

To calculate the pH of the solution, we use the equation:

$pH=-\log[H^+]$

We are given:

$[H^+]=1.0\times 10^{-8}M$

Putting values in above equation, we get:

$pH=-\log(1.0\times 10^{-8})\\\\pH=8$

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