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.
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+.
A. true
B. false
Na+ is oxidized to form Na2+.
A. true
B. false
Zn(s) is oxidized to form Zn2+.
A. true
B. false
For every mole of Zn(s), two moles of sodium hydroxide are used .
A. true
B. false
I think the answers are
1. True
2. False
3. false
4. True
Can you check if these are right please?
thank you
1 answer
2 answers