6. What change in reaction direction occurs if dilute HCI is added to a H.PO, so

Question

6. What change in reaction direction occurs if dilute HCI is added to a H.PO, solution? I.Coasider the solubility of BaSO. If Ba(NO,) is added to the solution, the solubility of the barium sulfate: a. decreases b. is unaffected c. is moot because barium sulfate is a strong electrolyte d. increases 2. Hydrogen is produced industrially by reacting propane and liquid water a. there is insafficient information to solve this problem b. shifts to the left c. no change in the reaction d. shifts to the right 7, What is the molar solubility of CaF, (K.-3.9 × 10-92 If the denominator of equilibrium expression is expressed as: [CHrHo, what are the values of "m" and"n" a. 1,3 b. 1, 0 a. 4.41 x 10*M b. 9.27 x 10 M c. 2.14 × 10-M d. 6.24 x 10*M 8. What is the pH of a 0.1055 M CH.COOH solution (K.- 1.75 x 10")? d. 7,3 3. In a dynamic equilibrium a. the rate of the forward and reverse reactions go to zero b. the rates of the forward and reverse reactions become equal c. the rate of the forward reaction goes to zero d. the reaction begins to favor the reverse direction 4. The conjugate base of ammonium chloride is a. 8.474 b. 2.770 c. 3.188 d. 2.867 9. What is the pli of a 0.150 M NaOH solution? a. 0.82 b. 13.18 C. 11.66 d. 3.05 10. Which of following species is a Bronsted-Lowry acid? b. HNO d. HCI 5. The synthesis of the pesticide thionyl chloride (OsCI) c proceeds according to: a. H.SO b. NaOH c.CaCl d. C.Ha 11. A large "K" value 0) indicates that the reaction tends to favor the forward direction and the formation of products IfAF =-106 kJ/mol for this reaction at 298K, what is the Ky at this temperature? Recall: R-8.314J mol K- a. 3.81 x 10 b. 7.21 × 10" True False d. 3.50 x 10

Explanation / Answer

1)

BaSO4 dissolves as:

BaSO4 (s) <—>   Ba2+(aq)   +   SO42- (aq)

Adding Ba(NO3)2 means adding Ba2+

we are adding a product

According to Le Chatelier's Principle,

Adding product will shift reaction towards reactant side

So, solubility will decrease

Answer: a

2)

liquid and solid do not appear in Kc expression

So,

H2O will not appear in Kc expression

So, n=0

m=1 (coefficient of C2H6)

Answer: b

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