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ACID/BASE PRACTICE PROBLEMS (a) 3 moles of sodium nitrate are placed in 1 L of water. Calculate...

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Chemistry

ACID/BASE PRACTICE PROBLEMS

(a) 3 moles of sodium nitrate are placed in 1 L of water.Calculate the pH.

(b) Calculate the Ka and the % ionization of a weak acid if 0.02moles of the acid is added to 1 L water and makes a solution with apH of 4.75.

(c) A solution containing 0.2 moles of NaOH, 0.3 moles of HCl,and 0.1 moles of HF (Ka=7.1e-4) is added to 1 L of water. Calculatethe pH and pOH.

(d) 0.2 moles of the salt acid of urea is added to 1 L of water,calculate the pH of the solution.

Answer & Explanation Solved by verified expert
4.1 Ratings (780 Votes)
a NaNO3 is a salt of a strong acid HNO3 and a strong baseNaOH We know that strong acid reacts with a strong base to givea neutral solution Hence the pH of this solution is 7NaNO3NaNO3moles333Volume of solution L111ConcentrationmoleL333b Let the weak acid be HA and initial    See Answer
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