0.70 gg of hydrogen chloride (HClHCl) is dissolved in water to make 4.0 LL of solution. What is the pHpH of the resulting hydrochloric acid solution? Express the pH numerically to two decimal places.

The pH of the hydrochloric solution is 2.32

Explanation:

Step 1: Data given

Mass of HCl = 0.70 grams

Volume = 4.0 L

Molar mass of HCl = 36.46 g/mol

Step 2: Calculate moles HCl

Moles HCl = mass HCl / molar mass HCl

Moles HCl = 0.70 grams / 36.46g/mol

Moles HCl = 0.0192 moles

Step 3: Calculate molarity

Molarity HCl = moles HCl / volume

Molarity HCl = 0.0192 moles / 4.0 L

Molarity HCl = 0.0048 M

Step 4: Calculate molarity H+

For 1 mol HCl we have 1 mol H+

Molarity HCl = molarity H+ = 0.0048 M

Step 5: Calculate pH

pH = -log[H+]

pH = -log (0.0048)

pH = 2.32

The pH of the hydrochloric solution is 2.32

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

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