Homework Clinic

Science Clinic => Chemistry => Topic started by: Kikoku on Nov 18, 2019

Title: Determine the oxidation state of carbon in the ionic carbide CaC2.
Post by: Kikoku on Nov 18, 2019

Question 1

Which of the following statements is TRUE?
◦ Carbides are soft materials with low melting points.
◦ Carbides can be cationic, anionic, and covalent.
◦ Metallic carbides are more malleable than the pure metal.
◦ Covalent carbides are formed between carbon and a nonmetal with low electronegativity.
◦ Ionic carbides form between carbon and another highly electronegative element.

Question 2

Determine the oxidation state of carbon in the ionic carbide CaC2.
◦ -2
◦ -1
◦ +4
◦ +1
◦ -4

Title: Determine the oxidation state of carbon in the ionic carbide CaC2.
Post by: chreslie on Nov 18, 2019

Answer 1

Covalent carbides are formed between carbon and a nonmetal with low electronegativity.

Answer 2

-1