Tuesday
April 28, 2015

Homework Help: chemistry

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+.

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

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