Q: 1.Show how you would prepare the following molecule from 2-hydroxybenzaldehyde. EtO From N. ΗΟ
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A: Step 1: (I)Step 2: (II)Step 3: (III)Step 4: (IV)Step 5: (V)
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- Boron is an anomaly in Group 13 in that it forms covalent compounds rather than ionic Suggest an explanation for this divergent behavior.
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- Chem 141, Dr. Haefner 2. (a) Many main group oxides form acidic solutions when added to water. For example solid tetraphosphorous decaoxide reacts with water to produce phosphoric acid. Write a balanced chemical equation for this reaction. (b) Calcium phosphate reacts with silicon dioxide and carbon graphite at elevated temperatures to produce white phosphorous (P4) as a gas along with calcium silicate (Silcate ion is SiO3²-) and carbon monoxide. Write a balanced chemical equation for this reaction.Molecules in the upper atmosphere tend to contain double and triple bonds rather than single bonds. Suggest an explanation.(a) (i) (ii) (iii) With the aid of a simple schematic, explain what covalent bonding is and how it is formed. What are the differences between a covalent bond and an ionic bond? Which type of bond is found in crystalline silicon? At room temperature do you expect an ionic crystal to be a good electrical conductor or a good electrical insulator? Explain why.
- The oxygen and nitrogen families have some obvious sim-ilarities and differences.(a) State two general physical similarities between Group5A(15) and 6A(16) elements. (b) State two general chemical similarities between Group5A(15) and 6A(16) elements.(c) State two chemical similarities between P and S.(d) State two physical similarities between N and O.(e) State two chemical differences between N and O.Give detailed Solution with explanation neededDraw a Lewis structure for(a) The cyclic silicate ion Si₄O₁₂⁸⁻(b) A cyclic hydrocarbon with formula C₄H₈
- How do beryllium hydroxide and barium hydroxide each compare to the Group II metal hydroxides, magnesium hydroxie, calcium hydroxide, and strontium hydroxide in terms of ionic size and effective nuclear charge (Zeff) on the ions?A nonmetal like oxygen forms both ionic and covalent bonds, depending on the identity of the element to which it bonds. What type of bonding is observed in CaO and CO 2? Explain why two different types of bonding are observed.The pentafluorides of the larger members of Group 5A(15)have been prepared, but N can have only eight electrons. A claim has been made that, at low temperatures, a compound with the empirical formula NF₅ forms. Draw a possible Lewis structure for this compound.
- Compounds such as NaBH4, Al(BH4)3, and LiAlH4 are complexhydrides used as reducing agents in many syntheses.(a) Give the oxidation state of each element in these compounds.(b) Write a Lewis structure for the polyatomic anion in NaBH4, and predict its shape.The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH; (g) + 5 0, (g) = 4 NO (g) + 6 H,0 (g) K1 2 NO (3) +0, (g) = 2NO, (g) K2 The net reaction is: 4 NH; (g) + 70, (g) = 4 NO, (g) + 6 H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K = oloThe first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH, (g) + 50, (g)=4 NO (g)+ 6 H,0 (g) K1 2 NO (g) + 0, (g) =2NO,(g) K2 The net reaction is: 4 NH3 (g)+ 70, (g) =4 NO, (g)+6H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K
