TECHNOLOGICAL INSTITUTE OF THE PHILIPPINES MANILA INORGANIC CHEMISTRY COMPETENCY NAME__________________DATE: NAME__________________DA TE: 08/12/15 CHE 546 ENGR. LORRAINE CARRILLO INSTRUCTIONS: PROVIDE THE SOLUTION FOR PROLEM!SOLVING "UESTIONS AND ENCIRCLE THE CORRECT ANS#ERS FOR THE MULTIPLE!CHOICE "UESTIONS 1. The term nucleons refer to________________ a. The neutrons b. The neutrons neutrons and the protons protons c. Protons, neutrons, and electrons d. NOTG 2. The size of the nucleus compared with the atom is _________________ a. About 1 times smaller. b. About 1 times times smaller. smaller. c. About 1 times smaller . d. NOTG !. "elect the element with the #reatest metallic character a. $i b. %a c. Al d. Pb &. 'ost atoms are neutral. This means( a. The nucleus is onl) made up of neutrons. b. There are e*ual numbers of electrons and positrons in the electron shells c. The electrons normall) ha+e zero char#e. d. The number of electrons balances out the number of protons. . -hat is the total char#e of a carbon nucleus in electronic char#e units a. / 0e b. / 2e c. /e d. /&e 0. esorcinol, used in manufacturin# resins, dru#s and other products, is 0.&&3 %arbon, .&43 5)dro#en, 24.03 O6)#en b) mass. 7ts molecular mass is 11#8mol. 11#8mol. -hat is the molecular formula
a. %050O2
b. %!5!O2
c. %5O
9. -hich of the followin# is a basic salt a.Na%7 b.:; c.N5&
d.%!50O2
d.N5&%25!O2
. -hat mass of o6)#en is re*uired to burn completel) #allons of a mi6ture that is 4.3 #asoline => ? .9&2 # m$ @1 and 1.3 ethanol => ? .94 # m$@1 b) +olume a. &&, 2 # O 2 b. !, 1# O2 c. 2, # O 2 d. &9, ! # O2 4. -hat are the concentrations =' of ;e /! and 7@1 ions in the solution created b) dissol+in# .2 mol ;e7 ! in water and dilutin# to 92 m$ a..92' 7@1, .2' ;e/! c. .1' ;e/!, .&2' 7@1 /! @1 b. .290' ;e , .29' 7 d. 1.1' ;e/!, .!' 7@1 1. Phenol red indicator chan#es from )ellow to red in the p5 ran#e from 0.0 to .. "tate what color the indicator will assume if 1. m$ of .1 M NaO5 are mi6ed mi6ed with 0. m$ of .1 M 5%l. a. #reen b. red c. oran#e d. )ellow %onsider the followin# e*uilibrium( B= s / 2<= g C B<2= s s whose Kc ? .1 at 129D%. $%&' ()11!12* 11. -hich of the followin# correctl) #i+es the relationship between Kp and Kc? a. Kp = Kc=T@1 b. Kp = Kc=T@2 c. Kp = Kc=T d. Kp = Kc=T2 12. -hat is the numerical +alue of Kp at 129D% for the abo+e e*uilibrium a. 1. 1. b. !. !. 6 1@& c. 4.! 6 1 @0 d. 4.2 6 1 @ 1!.%onsider the reaction( 5%25!O2 / 52OC 5!O/ / %25!O2@ %hoose the pair of substances that are both acids in the reaction. a. 5%25!O2 and 5!O/ c. 52O and 5!O/ b. 5%25!O2 and %25!O2@ d. 52O and %25!O2@
Erea, N52%ON52=a*, is the end product in protein metabolism in animals. The decomposition decomposition of urea in .1 ' 5%l occurs accordin# to the reaction( N52%ON52=a* / 5/=a* / 252O=l C 2N5 &/=a* / 5%O! 1@=a* The reaction is first order in urea, and first order o+erall. -hen FN52%ON52 ? .2', the rate at 01.D% is .0 6 1 @ ' s@ 1 . 1&. -hat is the half@ life for this reaction at 01.D% a. 29 min b. 1 min c. 2 min d. 0 min 1.-hat is the concentration of urea in this solution after . 6 1! s if the startin# concentration is . ' a. .1 ' b. .2' c. .4' d. .!!' 10. -hat is the +alue for the rate constant, H a. &.2 6 1 @2 s@1 b. &.1 6 1@! s@1 c. &. 6 1 @ s@1 d. &.2 6 1@& s@1 19. A buffer solution is prepared b) dissol+in# .1 mole 5%OO5 and 1. mole of Na=5%OO =sodium formate in enou#h water to maHe 1. $ of solution. -hat is the p5 of the buffer a. &. b. !. c. 2.2 d. 1.& 1. The insoluble salt A#
°
°
°
°
°
24. A solution containin# two alHaline earth metal ions is made from . '
b. anode
c.salt brid#e
d.none of
!2. A nucleus nucleus has a mass of 1!9. -hat is the mass number after positron emission a. 1!! b. 1!4 c. 1!9 d. 1! !!. "teel wool burns with difficult) in air =contains 213 O 2 but bursts into into a brilliant white flame in pure o6)#en. The factor that affects the rate of reaction for this obser+ation is a. Na N ature of reactants b. Temperature c. %oncentration of reactants reactants d. Presence of catal)st catal)st !&. "uppressio "uppression n of ionizati ionization on of a weaH electrol) electrol)te te b) the presence in the same solution of stron# electrol)te containin# one of the same ions as the weaH electrol)te.
a. buffer solution b. conu#ate@acid pair c.electrol)tes d. common@ion effect !. -hich of the followin# is dispersion of a solid in a li*uid a. allo) b. blood c. cooHed starch d. smo# !0. -hat is the molecular formula of a compound that has an empirical formula %5 2 and molar mass of & #8mol a. %0512 b. %51 c. %&5 d. %951& e. none of the choices !9. -hich does not belon# to the #roup a. cheese b. butter c. mar#arine mar#arine d. #elatin e. none of these !. -hich of the followin# is the most metallic a.% b.N c.< d.; !4. $unar caustic a.5NO! b.A#NO! c.NaNO !d. NaO5 &. -hich of the followin# is a weaH acid a.5;
b.5%l
c.5
d.57
