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4. Acid-base reaction is a neutralization reaction. If 12.50 mL of 1.20 M NaOH solution is...

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Chemistry

4. Acid-base reaction is a neutralization reaction. If 12.50 mLof 1.20 M NaOH solution is used to neutralize 45.25 mL ofHNO3 solution, calculate the concentration of the original HNO3solution.

   (A). 0.231 M

   (B). 0.995 M

   (C). 0.887 M

   (D). 0.331 M

   (E). 9.90 M

5. Acid-base reaction is a neutralization reaction. If 12.50 mLof 1.20 M NaOH solution is used to neutralize 45.25 mL ofH2SO4 solution, calculate the concentration of the original H2SO4solution. 2NaOH + H2SO4  Na2SO4 + 2H2O (balanced?)

   (A). 0.231 M

   (B). 0.995 M

   (C). 0.887 M

   (D). 0.166 M

   (E). 0.331 M

10. Milk of magnesia contains magnesium hydroxide. What mass ofMg(OH)2 is needed to prepare 500.00 mL of 0.0500 Msolution of magnesium hydroxide?

   (A). 0.987 g of Mg(OH)2

   (B). 0.654 g of Mg(OH)2

   (C). 1.46 g of Mg(OH)2

   (D). 10.7 g of Mg(OH)2

   (E). No correct answer is given

13. Write the complete molecular equation for the reactionbetween Na2SO4 and BaCl2 solutions.

14. Write the complete ionic equation for the reaction betweenNa2SO4 and BaCl2 solutions.

15. Write the net ionic equation for the reaction between Na2SO4and BaCl2 solutions.

16. Identify the driving force(s) in the reaction between Na2SO4and BaCl2 solutions.

Answer & Explanation Solved by verified expert
4.0 Ratings (748 Votes)
4 We need to remember that at equilibrium the moles of acid moles of bases added We start with 1250 mL 00125 L of 120 M NaOH solution so that moles of base added 00125 L120 molL 0015 mol NaOH At equilibrium this is equal to the number of moles of HNO3 neutralized The volume of HNO3 added is 4525 mL 004525 L Hence molarity of HNO3 0015 mol004525 L 0331 M Ans D 0331 M 5 In this case also we employ the    See Answer
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