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PtichkaEL [24]
3 years ago
7

If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?

Chemistry
1 answer:
mrs_skeptik [129]3 years ago
8 0
20 m Increase by five
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What is the pH of a 0.0042 M hydrochloric acid solution?
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Answer:

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Explanation:

The pH of any solution , helps to determine the acidic strength of the solution ,

i.e. ,

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and ,

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pH is given as the negative log of the concentration of H⁺ ions ,

hence ,

pH = - log H⁺

From the question ,

the concentration of the solution is 0.0042 M , and being it a strong acid , dissociates completely to its respective ions ,

Therefore , the concentration of H⁺ = 0.0042 M .

Hence , using the above equation , the value of pH can be calculated as follows -

pH = - log H⁺

pH = - log ( 0.0042 M )

pH =  2.38 .

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