(a) Write out the chemical equation for this reaction. (b) Will a concentrated solution of NaF in water be acidic, basic, or neutral? (c) Is fluoride acting as a Lewis acid or as a Lewis base when reacting with water? 16.95 Identify the Lewis acid and Lewis base among the reactants in each of the following reactions: (a) Fe(CIO4)3(s) + 6 H2O(1) = [Fe(H2O)6]3*(aq)+ 3 CIO4 (aq) (b) CN (aq) + H,O(1) = HCN(aq) + OH¯(aq) (c) (CH3)3N(g) + BF3(8) = (CH3)3NBF3(s) (d) HIO(lq) + NH, (lq) = NH3(lq) + IO (lq) (lq denotes liquid ammonia as solvent) 16.96 Identify the Lewis acid and Lewis base in each of the folloW- ing reactions: (a) HNO2(aq) + OH¯(aq) = NO, (aq) + H2O(1) (b) FeBr3(s) + Br¯(aq) FeBr4 (aq) (c) Zn²*(aq) + 4 NH3(aq) = Zn(NH3)4²+(aq) (d) SO2(8) + H2O(1) = H2SO3(aq) 16.97 Predict which member of each pair produces the more acidic aqueous solution: (a) K* or Cu2+, (b) Fe²+ or Fe3+, (c) Al3+ or Ga3+. 16.98 Which member of each pair produces the more acidic aque- ous solution: (a) ZnBr2 or CdCl2, (b) CuCl or Cu(NO3)2, (c) Ca(NO3)2 0or NiBr2? (d) Kt jon is acidic in water because it causes hydrating wa ter molecules to become more acidic.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
16.96
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