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- A baker uses sodium hydrogen carbonate (baking soda) asthe leavening agent in a banana-nut quickbread. The baking sodadecomposes according to two possible reactions: 2NaHCO₃(s)→Na₂CO₃(s)+CO₂(g)+H₂O(l) , NaHCO₃(s)+H⁺(aq)→Na⁺(aq)+CO₂(g)+H₂O(l) Calculate the volume (in mL) of CO₂ that forms at 200°C and0.975 atm per gram of NaHCO₃ by each of the reaction processes.Given - 1 NiCl2 + 2 NaOH —> 1Ni(OH)2 + 2 NaCl Q. Determine the moles of Ni(OH)2 that forms if the reaction is 100% efficientHow does the acidity of the binary acid of an element vary as a function of the electronegativity of the element? How does this relate to the position of the element in the periodic table?
- The breaking of the O-O bond in peroxydisulfuryl difluoride (FO,SOOSO,F) gives FO,SO: (FO2SO)2 2 2 FO2SO The compound on the left of this equation is a colorless liquid that boils at 67.1°C. Its vapor, when heated to about 100°C, turns brown as the product of the reaction forms. Suppose that, in a sample of the vapor, the intensity of the brown color doubles between 100°C and 110°C and that the total pressure increases only by the 2.7% predicted for an ideal gas. Estimate AH° for the preceding reaction.What is the chemical formula of the ionic compound that results from the the combination of calcium Ca(s) and phosphorus P4(s) ? CaP2 CaP CazP2 Ca2P4Acid Structure and Relative Acidity The strength of an acid, HA, is often determined by the strength and polarity of the H-A bond. In general, a weaker and more polar bond leads to a stronger acid. For binary acids of elements in the same group of the periodic table, the H-A bond strength decreases down the group, so acidity increases. For binary acids of elements in the same row of the periodic table, the polarity of the H-A bond increases from left to right (as the electronegativity of A increases), so acid strength increases. For oxoacids, acid strength increases with the oxidation number of the central atom. If the oxidation number is the same, acid strength increases with the electronegativity of the central atom. Part A Rank the following compounds in order decreasing acid strength using periodic trends. Rank the acid strength from strongest to weakest. To rank items as equivalent, overlap them. ▸ View Available Hint(s) BH₁ HBr HCI H₂S Greatest acid strength The correct ranking…
- 4. The common oxidation number for an alkaline earth metal is +2. (a) Using the Born-Mayer equation (for determining the lattice enthalpy) and a Born-Haber cycle (draw it), show that CaCl is an exothermic compound (negative AHf). Make a reasonable prediction to estimate the ionic radius of Ca (explain your reasoning). The sublimation (atomization) enthalpy for Ca(s) is 178 kJ/mol. (b) Show that an explanation for the non-existence of CaCl can be found in the enthalpy change for the reaction below. The AHf for CaCl2(s) is -190.2 kcal/mol. 2 CaCl(s) → Ca(s) + CaCl2(s)Calculate AH,ryn for rxn Ca(s) + 1/2 O2(g) + CO2(g) → CaCO;(s)Determine the second ionization energy of calcium (in kJ mol-1) from the given data (all in kJ mol-1): AH°[CaCl,(s)] = -796 AH¡[Ca(g)] = 178 AH°[CI(g)] = 122 First ionization energy of Ca(g) = 590 Electron affinity of Cl(g) = -349 Lattice enthalpy of CaCl,(s) = -2260 А 1150 В 1235 C 1093 D 1210