What is the oxidation state of the individual atoms which make yp a molecule of HCI
A. Hydrogen has a negative oxidation state and chlorine has a positive oxidation state.
B. Chlorine has a negative oxidation state and hydrogen has a positive oxidation state
C. Both hydrogen and chlorine have a zero oxidation state.
Determine which of the following statements is true about the electrical potential for various voltaic cells.
A. The electrical potentail for an Au-Cr cell would be greater thatn the electrical potential of a Zn-Cu cell
B. The electrical potenial for an Zn-Ag cell would be less than the electrical potential of Zn-Cu cell
C. The electrical potential for a Sn-Cu would be greater than the electrical potential of a Zn-Cu cell
D. All of these
A voltaic cell made up of Cr and Al produces the following half reactions Al(s) ---> Al3+ (aq) + 3 e- and Cr3+ (aq) + 3 e- ----> Cr(S)
What is the overall equation for the reaction?
2007-01-02 06:24:12 · 1 answers · asked by cetinnovations 1 in Science & Mathematics ➔ Chemistry
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2007-01-03 04:18:35 · update #1
What is the oxidation state of the individual atoms which make up a molecule of HCI?
Oxidation state for column 1A metals is always +1, for column 2A +2; for the halogens -1
Determine which of the following statements is true about the electrical potential for various voltaic cells.
Use http://www.chemguide.co.uk/physical/redoxeqia/ecs.html (esp chart at bottom) to solve...the further the metals are apart, the more electrical potential.
A voltaic cell made up of Cr and Al produces the following half reactions Al(s) ---> Al3+ (aq) + 3 e- and Cr3+ (aq) + 3 e- ----> Cr(S)
Line up the equations and sum them. Then cancel any items that appear on both sides of the equation for the complete reaction.
Hope this helps!
2007-01-02 06:59:27 · answer #1 · answered by teachbio 5 · 0⤊ 0⤋