what is the pH after 750 mL of water is added? you will need a calculator with a

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what is the pH after 750 mL of water is added? you will need a calculator with a log function to answer this question

Mastering chemistry: CH 10 HN Google Chrome Secure l https://session masteringchemistry.comAn assignmentProblemID 84028695 CHEM 100 Spring 2017 CHLLHW Think and Solve: 10.27 22 of 23 Think and Solve: 10.27 Part A When the pH of a solution is 1, the concentration What is the pH after 750 m L of water is added? You will need a calculator with a logarthm function to of hydronium ions is 10-i M. Assume that the answer this question. volume of this solution is 500 mL Express your answer using two significant figures. Submit MAns GM Up Feedback Continue

Explanation / Answer

You are increasing the volume of the water means you are diluting the acid strength. If a concentrated solution is diluted the following formula has to be applied: V1M1 = V2M2

V1 = initial volume = 500 ml, M1= initial molarity = 10-1

, V2 = final volume(after dilution) = 750 ml, M2 = final molarity = ?

So, final molarity = M2 = V1M1/V2 = 500x10-1/750 = 0.067 (M)

Now pH = -log(concentration of Hydronium ion) = -log0.067 = 1.17 ....Answer.

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