chemistry

posted by .

For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.

pH values:
NaCl 6.89
NaC2H3O2 7.75
Na2CO3 11.20
Cu(NO3)3 4.73
NH4Cl 5.91
Zn(NO3)2 5.20
KAl(SO4)2 3.70
NaHCO3 8.82

  • chemistry -

    NaCl doesn't deviate more than 1 pH unit from 7.0.
    Same for NaC2H3O2.
    Hydrolysis of Co3^2- accounts for the higher pH.
    CO3^2- + HOH ==> HCO3^- + OH^-

    Hydrolysis of NH4Cl accounts for the lower pH.
    NH4^+ + H2O ==> NH3 + H3O^+
    etc.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chem

    Calculate [H3O] in the following solutions. 5.15x10-2M HCl and 7.62x10-2M NaC2H3O2 Responses HCl + NaC2H3O2. It appears there is an excess of H^+ which will react with NaC2H3O2 to form HC2H3O2. That gives you a buffer of C2H3O2 and …
  2. Chemistry

    The Solvay process for the manufacture of sodium carbonate begins by passing ammonia and carbon dioxide through a solution of sodium chloride to make sodium bicarbonate and ammonium chloride. The equation for this reaction is H2O + …
  3. Chemistry

    The Hydrolysis Reactions - Write net-ionic equations for the reaction of each salt with water below. If there is no reaction, write N.R. 1. NH4C2H3O2 2. NH4Cl 3. NaCl 4. Na2CO3 5. NaC2H3O2 6. NaHSO4 7. FeCl3 8. NaH2PO4 9. NaHCO3
  4. Chemistry

    To prepare a 400 mL solution of .7500 M NaC2H3O2, how many grams of NaC2H3O2 would be needed?
  5. chemistry

    looking at all the averages on the front board, give at least three possible reasons for the values being different. classroom values from board: 10, 15, 25, 18, 39, 45
  6. chemistry

    For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.
  7. chemistry

    For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.
  8. Chemistry

    A solution of NaCl and glucose gives a freezing point of -0.95°C. It contains 140 mOsmol glucose/L. Give concentration of NaCl in milliosmoles per liter and molarity. Thanks
  9. Chem

    1) Which solution will have the lowest OH- A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 2) Which solution will be the strongest base?
  10. Chemistry

    To a mixture of NaCl and Na2CO3 with a mass of 1.300 g was added 55.00 mL of 0.243 M HCl (an excess of HCl). The mixture was warmed to expel all of the CO2 and then the unreacted HCl was titrated with 0.100 M NaOH. The titration required …

More Similar Questions