posted by Anonymous

Redox Reactions

Can anyone help predict the reaction that will take place when Gold is put into a solution of Hydrochloric Acid?

  1. DrBob222

    zilch. no reaction.
    Au is below hydrogen in the activity series; therefore, gold will not replace hydrogen ion from an acid such as HCl. Au will dissolve in Aqua Regia (royal water) which is a mixture of HCl and HNO3. The HNO3 serves as an oxidizing agent, some gold ions form, and they are then bound up in AuCl4^- complex ions which shifts the reaction to the right and that allows more Au to be oxidized by HNO3.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Chemistry

    Predict the most likely redox reaction and use the spontaneity rule to predict whether the reaction will occur spontaneously. 1. An aqueous solution of potassium permanganate was reacted with an acidic solution of sodium bromide and …
  2. Organic Chemistry

    isopentyl alcohol is reacted with acetic acid to make isopentyl acetate through Fischer esterification. Sulfuric acid is used to assist the reaction. After the reaction, the solution is washed with sodium bicarbonate. What reactions …
  3. chemistry

    Predict the the product for the following reactions. zinc + hydrochloric acid sulfuric acid + sodium hydroxide sodium + hydrogen acetic acid + coppper
  4. chem

    If 0.752 g of pure sodium carbonate was dissolved in water and the solution titrated with 25.90 mL of hydrochloric acid to a methyl orange end point, calculate the molarity of the hydrochloric acid solution. (Hint: This process takes …
  5. Chemistry

    Label the following reactions as combination, decomposition, displacement, precipitation, or acid-base reaction. Also whether each reaction is a redox or non redox reaction. SO2(g)+H2O(l)-> H2SO3(aq) NH3(aq)+HS(-)(aq)-> NH4(+)(aq)+S(2-) …
  6. Chemistry

    Please help me verify: The following reactions are involved in the formation of acid rain. Use oxidation numbers to identify which of these reactions are REDOX reactions. a. 2SO2(g) + O2(g) �� 2SO2(g) -2 -2 0 -2 -2 No …
  7. Chemistry

    2. What is the reduction half-reaction for the following unbalanced redox equation?
  8. chemestry please check my anwer.

    1.How do acid-base reactions differ from oxidation-reduction (or "redox") reactions?
  9. chemistry

    Hydrochloric acid solution reacts with zinc according to the following equation: 2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of hydrochloric acid solution Ca=0.5mol/l must be prepared from C=5mol/l hydrochloric solution. 1) Specify the …
  10. chemistry

    H2O2 + KI = I2 + KOH IS this correct for a redox reactions?

More Similar Questions