M 1341.251 Exam 3 Extention Spring 2018 ntion: You have one chance to add to ur
ID: 1036737 • Letter: M
Question
M 1341.251 Exam 3 Extention Spring 2018 ntion: You have one chance to add to ur exam score. This is an extention to your exam so it should be done without the use of oniines notes or textbook, or SI, SLAC, CLC. You should do these questions by yourself. You will have your exam 3 grade. You can earn 5 additional points per correct answer, system. There wil onses will be accepted. At 8:05 am, the system will shut down. LTIPLE CHOICE. Choose th At 8:05 am, the system wy the ruminit Clcke sytem. There will not extention on CHOICE. Choose the one alternative that best completes the statement or answers the qu 1) What reagent would distinguish between Ba2+ and Pb2+? D) Na2SO4 A) Na2S2O3 B) NaNO3 C) NaCl 2) What element is undergoing oxidation (if any) in the following reaction? 2 MnO4-(ag)+3 NO2 (ag) H200)-2 Mn02(s)+3 NOs-(aq) 2OH-(aq) A) N D) Mn E) This is not an oxidation-reduction reaction 3) Write a net ionic equation for the neutralization reaction of HCN(a?) with NaOH(a?). A) HCN(a?)+ NaOH(ag) NaCN(a) H200) B) H+(aa) OH-(a) H2O(U) C) HCN(aa)+OH-(a)-CN-(ag)+H200) D) HCN(aa)+ Na (aq)+OH-(aq)-Nat(a)+CN-g)H2Ou) E) No reaction occurs. RT ANSWER. W'rite the word or phrase that best completes each statement or answers the quest 4) If the percent yield for the following reaction is 75.0%, and 45.0 g of NO2 are consumed in the reaction, how many grams of nitric acid, HNO3(a?) are produced? 3 NO2(8)+ H200)-2 HNO3(aq) NOg) 5) Balance the chemical equation given below, and calculate the volume of nitrogen monoxide gas produced when 8.00 g of ammonia is reacted with 12.0 g of oxygen at 25'C The density of nitrogen monoide L0D
Explanation / Answer
1. c) NaCl
as some chlorides are soluble and some are not
2. a) N
as it undergoes oxidation from +3 state to +5 i.e. loss if electrons
3. a)
4. Assuming 75% yield 41.08 g HNO3 will be produced
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