(a)
Interpretation: Group 1A (1) elements show unique
Concept Introduction: The transformation of reactant molecules into product molecules is represented by a chemical reaction. It entails the forming and breaking of
A chemical equation can be used to represent the chemical reaction. It involves the single-headed arrows used to depict the conversion in the chemical formulas of the reactant and product molecules.
(b)
Interpretation: Marble statuary is destructed by acid rain. The balance chemical equation of calcium carbonate with aqueous nitric acid to form carbon dioxide, water, and aqueous calcium nitrate is to be interpreted.
Concept Introduction: The transformation of reactant molecules into product molecules is represented by a chemical reaction. It entails the forming and breaking of chemical compound bonds.
A chemical equation can be used to represent the chemical reaction. It involves the single-headed arrows used to depict the conversion in the chemical formulas of the reactant and product molecules.
(c)
Interpretation: Phosphorus trifluoride can be formed by the reaction of phosphorus trichloride and hydrogen fluoride with hydrogen chloride as the side product. The balance chemical equation is to be interpreted.
Concept Introduction: The transformation of reactant molecules into product molecules is represented by a chemical reaction. It entails the forming and breaking of chemical compound bonds.
A chemical equation can be used to represent the chemical reaction. It involves the single-headed arrows used to depict the conversion in the chemical formulas of the reactant and product molecules.
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CHEMISTRY MOLECULAR NATURE OF MATTER AND
- (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.arrow_forwardWhich of the following properties is NOT a characteristic of the Group 1A(1) elements They are shiny They are good conductors of heat. They react vigorously with water. Most of them are liquids at room temperature.arrow_forwardWrite the chemical equation of the thermite reaction, in which iron(III) oxide is reduced by aluminumarrow_forward
- 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 = oloarrow_forwardWrite a balanced equation for the formation of manganese (IV) oxide from its elementsarrow_forward4. 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)arrow_forward
- The naturally occurring precursor to other strontium compounds [strontium carbonate] is produced by a precipitation reaction. Write an equation in which strontium carbonate is produced from strontium nitrate and potassium carbonate.arrow_forwardGive an example of Interhalogen Compounds?arrow_forwardPlease write and balance the following combustion reactions that produce gaseous water and carbon dioxidearrow_forward
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