16. In the dilution of lo 0 mLofa0.10 Msolution of HCI to a lume of 20.0 mln wha
ID: 519781 • Letter: 1
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16. In the dilution of lo 0 mLofa0.10 Msolution of HCI to a lume of 20.0 mln what remains unchanged? the mass of the HCI solution a, the moles of HC in the solution e. All of the above change. of the HCI solution c, the volume of the HC1 solution 17. Which contains more solute pa a 0.10 M aqueous solution of methanol (CHvoH or a 0.10 Maqueous solution of salt (NaCl)? a. They contain the same number of solute methanol solution. b. The salt solution contains twice as many particles as the c. The methanol solution contains three times as many particles as the salt solution. d. Neither solution contains solute particles. many particles as the salt solution. e. The methanol solutioe contains 18. In its reaction with water, ammonia (NH) acid and as a base. d, serves as e, causes a precipitate to form. b, acts as a base. c. acts neither as an acid nor as a base. 19. Identify the acid in the following acid-base reaction. a. PbCoos) H.Sodaq) 20. If 1.0 L of 10 lled needed to be neutralized, how many grams of the solid sodium carbonate (NazCO. 106 and mol) would be required? 530 g a, 53 g 212 g b. 106 g c, 1060 21. How many liters oro 200 MNaoH solution are required to completely react with 1.00 L of0.100 MHCN solution to produce sodium cyanide and water? d, 1.50 L e, 2.00 L b. 050 L c, 1.00 L 22. Which of the following ionic compounds is insoluble in water? d. Ba(NO)n a. BaCI: b. Baso. c, NaOH 23. Which of the following compounds is most soluble in water? d. Kaso, b. CaCO, 24. The thermite reaction is used in welding applications and chemistry demonstrations because it releases a tremendous amount of energy. Which of the following statements is not correct regarding this reaction?Explanation / Answer
18. NH3 act as base since it abstract proton from H2O molecule and forms NH4+
19. H2SO4 (aq) act as acid in the reaction
22. BaSO4 is insoluble in water
24. Option e is not correct.All others are correct statement
25. HClO3 have +5 oxidation state for Cl
0 = +1+x-6
0 =x-5
Therefore x=Cl=+5 oxidation state
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