ctant R reacts with reactant S in two steps to yield product Z () R+ST (2) T+S-Z
ID: 1031035 • Letter: C
Question
ctant R reacts with reactant S in two steps to yield product Z () R+ST (2) T+S-Z AF 150 AN"--200 kJ Hess's law diagram FH F 17) The intermediate, T+S is represented by A) arrow C B) line D C) line E D) line F 18) What is the concentration of NO3-ions in a solution prepared by dissolving 150 g of Ba(NOs12 in enough water to produce 300. mL of solution? A) 0.573M B) 0.191 M C) 0382 M D) 0.057 M 19) The mixing of which pair of reactants will result in a precipitation reaction? A) Cs(ag) KOHa) C) HBr(ag)+Ca(OH)2(a) 20) What ion is provided when Arthenius bases dissolve in water? D) OH- B) Na* C)a- A) H+ 21) How many grams of AgNO3 are needed to make 250. mL of a solution that is 0.150 M2 D) 102 8 B) 6.378 )0.157g A) 0.102g 22) The chemical formula for nitric acid is D) H2NO3(ag) B) HNO2(ag) HNO3a4) A) H2NO2(ng) 23) What is the oxidation number change for the manganese atom in the following unbalanced reduction half reaction? D)+5 C) +7 B) -5 A) B) AH is negative and AS is positive. D) is negative and AS is negative. 24) Which combination always results in a reaction being spontaneous? A) is positive and AS is positive. C) is positive and AS is negative.Explanation / Answer
Ans 17 : C) line E
The intermediate T, + S is represented by line E in the Hess's law diagram shown in the picture.
The line D represents the reactant and line F represents the final product of the reaction.
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