(A) Write chemical equations for the reactions that occur when NaCN is dissolved in water and when...

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(A) Write chemical equations for the reactions that occur when NaCN is dissolved in water and when Al(NO3)3 is dissolved in water. Then, use data from Appendix D to explain why a precipitate of Al(OH)3 forms when equal volumes of 1.0 M aqueous solutions of NaCN and Al(NO3)3 are mixed.

(B) The compound BeCl2 · 4 H2O cannot be dehydrated by heating and it dissolves in water to give an acidic solution. Conversely, CaCl2 · 6 H2O can be dehydrated by heating and it dissolves in water to give a solution with neutral pH. Explain these observations and write chemical equations for the reactions that occur, if any, when the salts are heated and when they are dissolved in water.

TABLE D.1 Ground-State Electron Configurations Element Configuration Z Z 1 2 3 4 5 6 7 8 9 HIG&LUZONSUZ SE> 0

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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