l use HPhen as an ltlulc solution and undergoes a reaction in a basic It LBmpoun

Question

l use HPhen as an ltlulc solution and undergoes a reaction in a basic It LBmpound, the anion of which is pink colored in solution. It indicates that a n has taken place if it changes color and the color indicates what is present. io weak acid itself, is reacting. This is shown by the change in color, the formation of somethinS label the colors of the product and reactants. Use HPhen for phenolphthalein, which is a Colors! terestingly, in each of the cases above, not only are the acids and bases reacting but the indicator, a Write a reaction for what is happening to the phenolphthalein when it reacts with a base(NaoHan acid dex Mol. Eqn: HPhenNaot > lonic Eqn. Net lonic Eqn: K. You will see a piece of aluminum foil that has been placed in a solution of copper (ID nitrate. Note what has happened to the aluminum and note the formation of a brown solid at the bottom of the beaker Observations: blue cow deceai, aluminum fnl dussnuiw, bmm alumi Names: lonic Eqn. Net lonic Eqn:

Explanation / Answer

molecular

Hphen + NaOH --> H2O + Na+ + phen-

ionic

Hphen + Na+ + OH- --> H2O + Na+ + phen-

net ionic includes only reacting ions

Hphen + OH- --> H2O + phen-

Q2.

2Al + 3Cu(NO3)2 --> 2Al(NO3)3 + 3Cu

ionic

2Al + 3Cu+2 + 6NO3- --> 2Al+3 + 6NO3- + 3Cu(s)

net ionic includes only reacting species

2Al(s) + 3Cu+2 --> 2Al+3 + 3Cu(s)

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