Classify the reaction type (formation, simple composition, decomposition, combustion, single replacement, double replacement) and predict the balance equation
1. AL(s) + 02(g) ------>
2. Ag2O(s)------>
3. Br2(1) + KI(aq) ------->
CS2
To classify the reaction type and predict the balanced equation, we will need to look at the reactants and products in each case.
1. AL(s) + 02(g) ------>
This is a combustion reaction. In combustion reactions, oxygen (O2) reacts with a substance and forms an oxide.
To predict the balanced equation, we need to determine the ratio of aluminum (Al) to oxygen (O) in the reactants and then balance the equation by adjusting the coefficients:
4Al(s) + 3O2(g) ------> 2Al2O3(s)
2. Ag2O(s) ------>
This is a decomposition reaction. In decomposition reactions, a single compound breaks down into two or more simpler substances.
To predict the balanced equation, we need to break down the silver oxide (Ag2O) into its constituent elements, silver (Ag) and oxygen (O):
2Ag2O(s) ------> 4Ag(s) + O2(g)
3. Br2(l) + KI(aq) ------->
This is a double replacement reaction. In double replacement reactions, the cations and anions of two compounds exchange places.
To predict the balanced equation, we need to determine the products formed by swapping the cations and anions of the reactants:
Br2(l) + 2KI(aq) ------> 2KBr(aq) + I2(l)
Please note that the state of matter (s) for solid, (g) for gas, and (aq) for aqueous solution helps to provide additional information about the reactants and products.