Homework Answers
#1.
Oxidation No. of an atom in a molecule reveals about its electonegativity corresponding to atom it is bonded.
#2.
A). oxidation No. must be whole No. since one atom can attract /accept or donate whole No. of electrons. It cannot share fraction of it.
B) It mean an atom is present in oxidation states in given molecule.
#3.
a) species oxidized = HCl or Cl-
b) species getting reduced = Na2Cr2O7 or Cr2O72-
c) oxidizing agent : Cr2O72-
d) reducing agent : HCl or Cl-
e) No. of electron transferred : 2*Cr(+6) ==> 2*Cr(+3) , thus 6 electrons.
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e) What mass of silver nitrate must be added in order to precipitate all of the...
The electronegativity of an atom is its ability to attract electrons in a covalent bond closer...
The electronegativity of an atom is its ability to attract electrons in a covalent bond closer to itself. Fluorine is the most electronegative element. Table 1. Pauling's electronegativities for selected elements. H 2.20 Li 0.98 Be 1.57 B 2.04 с 2.55 N 3.04 o 3.44 F 3.98 Na 0.93 Mg 1.31 ΑΙ 1.61 Si 1.90 P 2.19 S 2.58 CI 3.16 K 0.82 Ca 1.00 Sc 1.36 Ga 1.81 Ge 2.01 As 2.18 Se 2.55 Br 2.96 Rb 0.82 Sr...
Use the table of electronegativity valeus from Ch 12 of the Bishop text. For each of...
Use the table of electronegativity valeus from Ch 12 of the
Bishop text. For each of the following answers, first identify each
bond as nonpolar covalent, polar covalent, or ionic. If a bond is
polar covalent or ionic, identify the more negative element.
Separate the two answers with a comma.
Example: C-O Answer: polar covalent, O
Figure 12.19 A Table of Average Electronegativities 18 8A 1 2 13 14 ЗА 4А 2.04 2.55 3.04 3.44 3.98 2.20 15 GA...
pand hould 5. The number of pi bonds in the molecule below is нн Н- С-С- нн B) 4 6 D) 10 E) 15 6. The geometry of t...
pand hould 5. The number of pi bonds in the molecule below is нн Н- С-С- нн B) 4 6 D) 10 E) 15 6. The geometry of the CS2 molecule is best described as A) linear. B) trigonal planar. C) tetrahedral. D) bent. E) trigonal pyramidal. 7. Which choice gives the correct oxidation numbers for all three elements in Ca(CIO); in the order that the elements are shown in the formula? A) +2, +1,-2 B) +2,-2, +1 C) +2,-3,...
could someone please answer and explain the questions please!! #’s 7,8,9,13,14,17,18,19,20 please and thank you What...
could someone please answer and explain the questions please!!
#’s 7,8,9,13,14,17,18,19,20
please and thank you
What is the oxidation number for the underlined manganese (A)1 (B)2 (C)4(D)(E)7 When balancing the below half-reaction in 8. Which of the following is true concerning a 1. vanic cc A) Oxidation occurs at the cathode and is (B) Oxidation occurs at the anode and is where anions move towards 2. acidic sol electrons are added to ution, where anions move towards side of.the.cquation. where...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of w...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of whole numbers? __Cas(PO4h + H2SO4 - Caso + HPO. A) 3 B) 8 C) 10 D) 11 2) What is the coefficient of H20 when the following equation is properly balanced with smallest set of whole numbers? ALC + H2O - AM(OH), + CHE A) 3 B) 4 C) 6 D) 12 E) 24 3) of the reactions below, which one is...
CHEM 1411. Review Exercises for Chapter 3, 7, 8. F19 1. Give the number of lone...
CHEM 1411. Review Exercises for Chapter 3, 7, 8. F19 1. Give the number of lone pairs around the central atom and the geometry of the ion CIO2 A) 0 lone pairs, linear 1 lone pair, bent B) C) 2 lone pairs, bent D) 3 lone pairs, bent E) 3 lone pairs, linear 2. Predict the geometry and polarity of the CS2 molecule. A) linear, polar B) linear, nonpolar C) tetrahedral, nonpolar D) bent, nonpolar E) bent, polar 3. Which...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
The electronegativity of an atom is its ability to attract electrons in a covalent bond closer to itself. Fluorine is the most electronegative element. Table 1. Pauling's electronegativities for selected elements. H 2.20 Li 0.98 Be 1.57 B 2.04 с 2.55 N 3.04 o 3.44 F 3.98 Na 0.93 Mg 1.31 ΑΙ 1.61 Si 1.90 P 2.19 S 2.58 CI 3.16 K 0.82 Ca 1.00 Sc 1.36 Ga 1.81 Ge 2.01 As 2.18 Se 2.55 Br 2.96 Rb 0.82 Sr...
Use the table of electronegativity valeus from Ch 12 of the
Bishop text. For each of the following answers, first identify each
bond as nonpolar covalent, polar covalent, or ionic. If a bond is
polar covalent or ionic, identify the more negative element.
Separate the two answers with a comma.
Example: C-O Answer: polar covalent, O
Figure 12.19 A Table of Average Electronegativities 18 8A 1 2 13 14 ЗА 4А 2.04 2.55 3.04 3.44 3.98 2.20 15 GA...
pand hould 5. The number of pi bonds in the molecule below is нн Н- С-С- нн B) 4 6 D) 10 E) 15 6. The geometry of the CS2 molecule is best described as A) linear. B) trigonal planar. C) tetrahedral. D) bent. E) trigonal pyramidal. 7. Which choice gives the correct oxidation numbers for all three elements in Ca(CIO); in the order that the elements are shown in the formula? A) +2, +1,-2 B) +2,-2, +1 C) +2,-3,...
could someone please answer and explain the questions please!!
#’s 7,8,9,13,14,17,18,19,20
please and thank you
What is the oxidation number for the underlined manganese (A)1 (B)2 (C)4(D)(E)7 When balancing the below half-reaction in 8. Which of the following is true concerning a 1. vanic cc A) Oxidation occurs at the cathode and is (B) Oxidation occurs at the anode and is where anions move towards 2. acidic sol electrons are added to ution, where anions move towards side of.the.cquation. where...
What is the coefficient of H.So, when the following equation is properly balanced with the smallest set of whole numbers? __Cas(PO4h + H2SO4 - Caso + HPO. A) 3 B) 8 C) 10 D) 11 2) What is the coefficient of H20 when the following equation is properly balanced with smallest set of whole numbers? ALC + H2O - AM(OH), + CHE A) 3 B) 4 C) 6 D) 12 E) 24 3) of the reactions below, which one is...
CHEM 1411. Review Exercises for Chapter 3, 7, 8. F19 1. Give the number of lone pairs around the central atom and the geometry of the ion CIO2 A) 0 lone pairs, linear 1 lone pair, bent B) C) 2 lone pairs, bent D) 3 lone pairs, bent E) 3 lone pairs, linear 2. Predict the geometry and polarity of the CS2 molecule. A) linear, polar B) linear, nonpolar C) tetrahedral, nonpolar D) bent, nonpolar E) bent, polar 3. Which...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
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