Sunday
April 20, 2014

Homework Help: Chemistry

Posted by Jack on Thursday, March 28, 2013 at 12:28pm.

1.
Which of the following metals is oxidized by calcium ions?

*potassium
zinc
iron
lead






2.
The first electrochemical cell was invented by ____.

Michael Faraday
*Alessandro Volta
James Maxwell
Benjamin Franklin






3.
Why can't a lead storage battery be recharged indefinitely?

A direct current must pass through the cells.
The electrodes lose lead sulfate.
*It is difficult to reverse the direction of current flow.
The electrolyte is too expensive.





4.
Which electrode (anode or cathode) is designated as positive in an electrolytic cell?

anode
*cathode
both
neither






5.
What is the direction of electron flow in an electrolytic cell?


from cathode to anode
*from anode to cathode
in either direction
There is no flow.






6.
What electrolyte can be used to electrolyze water?

hydrochloric acid only
sodium chloride only
sodium hydroxide only
*any electrolyte that is not easily reduced or oxidized






7.
The gas produced at the cathode in the electrolysis of brine is ____.

*hydroxide
chlorines
oxygen
hydrogen






8.
In electroplating, the object to be electroplated is placed _____.

*at the anode
at the cathode
at either the anode or the cathode
in between the anode and the cathode

Thank You.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - Suppose you have a supply of the following metals: Fe, Ni,Sc, Cr, Au...
Chemistry - What types of elements are involved in metallic bonding? A. noble ...
Physical science - The question which elements would be classified as metals? ...
science Dr Bob - In reference to table you helped me with the last question is ...
Organic Chemistry - How do you name the products? 2-ethyl-1,3-hexanediol is ...
Grade. 12 Chem - Please check my answer! - Determine whether the following are ...
Chemistry - 4, Assign oxidation states for the two elements in the compound OF2...
chemistry - the alkali metals are a group of oxidation metals that decrease in ...
Biology - In lactic acid fermentation, ______ is _______ a) lactate...oxidized b...
Chemistry - Calculate Delta G for the spontaneous cell produced from the ...

Search
Members