Posted by chem help on Sunday, May 2, 2010 at 4:13pm.
In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to form
sodium zincate according to the following reacton:
Zn(s) + 2NaOH(aq) Na2ZnO2(aq) + H2(g)
Answer true or false for each of the following statements regarding the reaction above.
Zn(s) is reduced to form Zn+.
Na+ is oxidized to form Na2+.
Zn(s) is oxidized to form Zn2+.
For every mole of Zn(s), two moles of sodium hydroxide are used .
I think the answers are
Can you check if these are right please?
- chemistry - DrBob222, Sunday, May 2, 2010 at 4:22pm
Look at 1 and 3.
Zn has oxidation state of zero on the left and +2 on the right. So it lost electrons, right? Loss of electrons is oxidation. Remember, Leo the lion goes Grrr. LEO--loss electrons oxidation.
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