Top answers

How do you make calcium hydroxide (Ca(OH)2) from Calcium carbonate (CaCO3) and what are the equations.

Thermally decompose the calcium carbonate:CaCO 3 -> CaO + CO 2 Now mix the CaO with water:CaO + H 2 O -> Ca(OH) 2
NL
Answered by Nathan L. • Chemistry tutor
23764 Views

Name the type of reaction that takes place when calcium carbonate is heated strongly?

This is called thermal decomposition. CaCO 3 decomposes into calcium oxide (CaO) and Carbon Dioxide (CO 2 ).
TG
Answered by Thomas G. • Chemistry tutor
31830 Views

Describe a single covalent bond in terms of the electron distribution of the atoms involved.

Atoms involved in a covalent bond will share ​a pair of electrons in order to acheive a full outer shell in both atoms. Each atom will donate a single electron to the bond, which will then orbit both atoms s...
TM
Answered by Thomas M. • Chemistry tutor
4193 Views

The element sulfer is a common componant of coal. When the coal is burned, what pollutant will the sulfer form? How will this new compound impact the environment?

Sulfer, when burned in the presence of oxygen, will form sulfer dioxide (SO 2 ​). This can then dissolve in rain water, forming sulfuric acid. This will then fall to the ground as acid rain which can then ki...
TM
Answered by Thomas M. • Chemistry tutor
4177 Views

If 20 kg of calcium carbonate was reacted with excess sodium chloride in the following reaction (2NaCl+CaCo3-->Na2Co3+CaCl2) what is the maximum mass of sodium carbonate that could be made?

1)Always write out the reaction first; 2NaCl+CaCo3-->Na2Co3+CaCl2 2)Now underneath calculate the Relative Formula Mass using a periodic table for each of the compounds. CaCo3=100/ Na2Co3=106 3)Now always ...
AR
Answered by Andrew R. • Chemistry tutor
12790 Views