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What is the [H3O + ] concentration of a solution formed by mixing 50.0 mL of...

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Chemistry

What is the [H3O + ] concentration of a solution formed bymixing 50.0 mL of 0.20 M HCl and 50.0 mL of 0.10 M NaOH?

Given 100.0 mL of a buffer that is 0.50 M in HOCl and 0.40 M inNaOCl, what is the pH after 10.0 mL of 1.0 M NaOH has been added?(Ka for HOCl = 3.5  108 ).

What is the pH of a solution prepared by mixing 50 mL of a 0.10M solution of HF with 25 mL of a 0.20 M solution of NaF? (The pKaof HF is 3.14.)

Answer & Explanation Solved by verified expert
3.8 Ratings (359 Votes)
Molarity Number of moles Volume L Now 500 mL of 020 M HCl Number of moles of HCl 005 L x 02 M 001 mol of HCl 500 mL of 010 M NaOH Number of moles of NaOH 005 L x 01 M 0005 mol of NaOH 0005 mol of NaOH will neutralize 0005 mol of HCl So remaining mole of HCl 001 0005 0005 mol of HCl Total volume 50 mL 50 mL 100 mL 01 L HCl 0005 mol 01 L 005 M HCl is a strong acid and it will dissociate completely So H3O 005 M pH log    See Answer
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