(a) Potassium chlorate (KClO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction adn indicate the evolution of gas.
(b) Rewrite the following information in the form of a balanced chemical equation :
Magnesium burns in carbon dioxide to form magnesium oxide equation :
(a) Potassium chlorate (KClO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction adn indicate the evolution of gas.
(b) Rewrite the following information in the form of a balanced chemical equation :
Magnesium burns in carbon dioxide to form magnesium oxide equation :
(a)
Notice that the number of atoms of K and Cl are the same on both sides, but the numbers of O atoms are not. There are 3 O atoms on the the left side and 2 on the right. 3 and 2 are factors of 6, so add coefficients so that there are 6 O atoms on both sides.
Now the KandCl atoms are not balanced. There are 2 of each on the left and 1 of each on the right. Add a coefficient of 2 in front of KCl.
The equation is now balanced with 2 K atoms, 2 Cl atoms, and 6 O atoms on both sides.
(b)
2Mg(s)+CO2(g)⟶2MgO(s)+C(s)
(a)
Notice that the number of atoms of K and Cl are the same on both sides, but the numbers of O atoms are not. There are 3 O atoms on the the left side and 2 on the right. 3 and 2 are factors of 6, so add coefficients so that there are 6 O atoms on both sides.
Now the KandCl atoms are not balanced. There are 2 of each on the left and 1 of each on the right. Add a coefficient of 2 in front of KCl.
The equation is now balanced with 2 K atoms, 2 Cl atoms, and 6 O atoms on both sides.
(b)
2Mg(s)+CO2(g)⟶2MgO(s)+C(s)
