Question : 51) How many milliliters of 0.100 M Ba(OH)2 required to : 1324884

51) How many milliliters of 0.100 M Ba(OH)2 are required to neutralize 20.0 mL of 0.250 M HCl?

A) 100. mL

B) 50.0 mL

C) 25.0 mL

D) 0.250 mL

E) 0.50 mL

52) Acid rain has a

A) pH < 7. B) pH > 7.

C) pH < 6.2. D) pH < 2.6.   53) A major cause of acid rain is A) CO2 production. B) CaCO3 production. C) SO2 production. D) NH3 production. For the problem(s) that follow, consider the reaction in which magnesium reacts with an HCl solution .   Mg(s)  +  2HCl(aq)   →  MgCl2(aq)  +  H2(g)   54) If 2.00 g of Mg reacts completely with 50.0 mL of HCl solution, what is the molarity of the HCl solution? A) 1.65 M B) 80.0 M C) 8.00 M D) 0.823 M E) 3.29 M   55) The function of a buffer is to A) change color at the end point of a titration. B) maintain the pH of a solution. C) be a strong base. D) maintain a neutral pH. E) act as a strong acid.   56) The normal blood pH is about A) 6.8. B) 7.0. C) 7.2. D) 7.4. E) 7.6.   57) In a buffer system of HF and its salt, NaF, A) the HF neutralizes added acid. B) the HF neutralizes added base. C) the HF is not necessary. D) the F- neutralizes added H2O. E) the F- neutralizes added base. 58) Which of the following is a buffer system? A) NaCl and NaNO3 B) HCl and NaOH C) H2CO3 and KHCO3 D) NaCl and NaOH E) H2O and HCl   59) Which of the following could be a buffer? A) NaF B) HF  +  NaF C) HF  +  H2O D) NaF  +  H2O E) NaCl  +  HF   60) What is the name of the medical condition of an asthmatic patient with a blood pH of 7.30? A) respiratory acidosis B) respiratory alkalosis C) metabolic acidosis D) metabolic alkalosis E) diabetes mellitus   61) If a condition of hypoventilation occurs, the blood pH of the patient is expected to A) saturate. B) increase. C) decrease. D) stay the same. E) concentrate.   62) When hyperventilation (rapid breathing) causes a patient to exhale large amounts of CO2, the blood pH rises in a condition called A) metabolic acidosis. B) metabolic alkalosis. C) respiratory acidosis. D) respiratory alkalosis. E) pulmonary distress. 63) Which solution has the highest pH? A) a buffer made with 0.10 M acetic acid and 0.01 M sodium acetate B) a buffer made with 0.10 M acetic acid and 0.10 M sodium acetate C) a buffer made with 0.01 M acetic acid and 0.10 M sodium acetate D) a buffer made with 0.01 M acetic acid and 0.01 M sodium acetate E) All of the buffers have the same pH since they are all made with acetic acid and sodium acetate.   64) Which solution has the lowest pH? A) a buffer made with 0.10 M acetic acid and 0.01 M sodium acetate B) a buffer made with 0.10 M acetic acid and 0.10 M sodium acetate C) a buffer made with 0.01 M acetic acid and 0.10 M sodium acetate D) a buffer made with 0.01 M acetic acid and 0.01 M sodium acetate E) All of the buffers have the same pH since they are all made with acetic acid and sodium acetate.