Chemistry Study Guide

Chemistry require Guide* scruple 1 10 break through of 10 points gibe to VSEPR theory, which one of the adjacent molecules should have abent shape? help Selected assist Cl2O * query 2 10 egress of 10 points concord to the VSEPR theory, the molecular shape of SiCl4is purpose Selected coiffe tetrahedral. * interrogative sentence 3 10 out of 10 points According to the VSEPR theory, the shape of the SO3molecule is repartee Selected purpose trigonal planar. * hesitation 4 10 out of 10 points Balance the following equating using the smallest set of whole numbers, then add together the coefficients. Dont stymy to count coefficients of one. ___ Al + ___ H2SO4 ___ Al2(SO4)3+ ___ H2 The sum of the coefficients is resolving Selected Answer 9. * Question 5 10 out of 10 points Consider the species Cl2+, Cl2, and Cl2?. Which of these species will be paramagnetic? Answer Selected Answer Cl2+and Cl2? * Question 6 10 out of 10 p oints How some(prenominal) O touchs are there in 51. 4 g CaSO4?Answer Selected Answer 9. 09 ? 1023 * Question 7 10 out of 10 points How many a(prenominal) covalent bonds will a nitrogen atom usually edition? Answer Selected Answer 3 * Question 8 10 out of 10 points How many grams of Cl2can be prepared from the reaction of 16. 0 g of MnO2and 30. 0 g of HCl according to the following chemical par? MnO2+ 4HCl MnCl2+ Cl2+ 2H2OAnswer Selected Answer 13. 0G * Question 9 10 out of 10 points How many grams of sodium are there in 10. g of sodium sulfate, Na2SO4?Answer Selected Answer 3. 2 * Question 10 10 out of 10 points In which of the following would the bonding beweakenedwith the addition of an negatron to form the negative molecular ion? Answer Selected Answer N2 * Question 11 0 out of 10 points In which of these pairs of atoms would the bond have the sterling(prenominal)percent bean character (i. e. , most polar)? Answer Selected Answer c-os-o ff * Question 12 10 out of 10 points assign the type of hybrid orbitals used by the central atom in PCl3.Answer Selected Answer sp3 uestion 13 10 out of 10 points The F? S? F bond angles in SF6areAnswer Selected Answer 90 and 180. * Question 14 10 out of 10 points The Lewis dot symbol for the a lead atom isAnswer Selected Answer Not A * Question 15 10 out of 10 points The Lewis structure for CS2isAnswer Selected Answer * Question 16 10 out of 10 points The number of pi bonds in the molecule below is Answer Selected Answer 3 Question 17 10 out of 10 points The number of resonance structures for the nitrate ion that satisfies the eight-spot rule isAnswer Selected Answer 3 Question 18 Question 18 10 out of 10 points The shape of the CS2molecule is best depict asAnswer Selected Answer linear. * Question 19 0 out of 10 points What is the globe charge on sulfur in the best Lewis structure for the SCN? (thiocyanate) ion? Answer Selected Answer ? 1 +2 -2+1 * Question 20 10 out of 10 points What type of chemical bond holds the atoms together at bottom a water molecule? Answer Selected Answer Polar covalent bond Question 2110 out of 10 points When 22. 0 g NaCl and 21. 0 g H2SO4are mixed and react according to the equation below, which is the constraining reagent? 2NaCl + H2SO4 Na2SO4+ 2HClAnswer Selected Answer * Question 22 10 out of 10 points Which of the following correctly lists species in order ofincreasingbond length? Answer Selected Answer O2+ O2 O2? * Question 23 0 out of 10 points Which of these atom is themostelectronegative? Answer Selected Answer P Question 24 10 out of 10 points Which of these compounds is most apparent to be ionic? Answer Selected Answer KF * Question 25 10 out of 10 points Which of these elements is most likely to exhibit an expanded octet in its com pounds? Answer Selected Answer s * Question 26 0 out of 10 points Which of these ionic solids would have the largest lattice energy? Answer Selected Answer CaBr2NaF, NaCl * Question 27 10 out of 10 points Which of these pairs of elements would be most likely to form an ionic compound? Answer Selected Answer Cl Mg * Question 28 10 out of 10 points Which of these substances will reveal an incomplete octet in its Lewis structure? Answer NO uestion 29 10 out of 10 points Which response includes all the molecules below that do not follow the octet rule? (1) H2S(2) BCl3(3) PH3(4) SF4Answer Selected Answer (2) and (4)