Chemistry Study Guide

Chemistry Study Guide* dubiousness 1 10 appear of 10 points According to VSEPR theory, which one of the pursuance molecules should have abent shape? consequence Selected settlement Cl2O * interrogative 2 10 out of 10 points According to the VSEPR theory, the molecular shape of SiCl4is declaration Selected attend tetrahedral. * principal 3 10 out of 10 points According to the VSEPR theory, the shape of the SO3molecule is purpose Selected Answer trigonal planar. * doubtfulness 4 10 out of 10 points Balance the following equation using the smallest set of whole numbers, then add together the coefficients. Dont forget to count coefficients of one. ___ Al + ___ H2SO4 ___ Al2(SO4)3+ ___ H2 The sum of the coefficients isAnswer Selected Answer 9. * head teacher 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 o f 10 points How galore(postnominal) O blood corpuscles are there in 51. 4 g CaSO4?Answer Selected Answer 9. 09 ? 1023 * Question 7 10 out of 10 points How many covalent bonds will a nitrogen atom usually form? 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 equation? 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 electron 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 thegreatestpercent ionic character (i. e. , most polar)? Answer Selec ted Answer c-os-o ff * Question 12 10 out of 10 points Indicate 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 to a lower place is Answer Selected Answer 3 Question 17 10 out of 10 points The number of resonance structures for the nitrate ion that satisfies the octet rule isAnswer Selected Answer 3 Question 18 Question 18 10 out of 10 points The shape of the CS2molecule is best described asAnswer Selected Answer linear. * Question 19 0 out of 10 points What is the formal charge on sulfur in the b est 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 within a water molecule? Answer Selected Answer cold 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 hold in 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 likely to be ionic? Answer Selected Answer KF * Question 25 10 out of 10 points Which of these elements is most likely to show an expanded octet in its compounds? Answer Selected Answer s * Question 26 0 out of 10 points Which of these ionic solids would have the largest lattice nothing? 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 display 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)