Question

1. a ph is a logarithmic scale that is used to describe the relative concentration of the carbon ion.

true
false

1. because ph is based on logarithms, a decrease of one means the acid is 10 times more acidic, and an increase in one means it is 10 times more basic.

true
false

1. what is the ph of a 0.0235 m hcl solution?

hint: ph = - logh+

1. what is the ph of a 0.05 m hcl solution?

hint: ph = - logh+

Explanation:

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pH is a logarithmic scale that describes the relative concentration of hydrogen ions ($H^+$), not carbon ions.

Since pH = -log[H⁺], a decrease in pH by 1 means an increase in [H⁺] by a factor of 10 (more acidic), and an increase in pH by 1 means a decrease in [H⁺] by a factor of 10 (more basic).

Step1: Identify hydrogen - ion concentration

HCl is a strong acid and dissociates completely in water. For a 0.0235 M HCl solution, [H⁺]=0.0235 M.

Step2: Calculate pH

Using the formula pH = -log[H⁺], we substitute [H⁺]=0.0235 into the formula. pH = -log(0.0235).
pH≈1.63

Answer:

False

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