Question

can anyone give me answers of a and b?​

Answer 1

Answer:

Hi mate

Explanation:

a) A combination reaction is a reaction where two or more elements or compounds combine to form a single compound.

b)Combination reactions are always exothermic. For example barium metal and fluorine gas will combine in a highly exothermic reaction to form the salt barium fluoride: Another example is given by magnesium oxide combining with carbon dioxide: Often, reaction can fall into more than one category.

C) The high-temperature combination of nitrogen and oxygen to form nitric oxide (NO) is an endothermic reaction. , which means that the equilibrium will lie to the left, i.e. it will favor the reactants more than the product.

Answer 2

Combination Reactions

• In a combination reaction the atoms and/or molecules do what the name implies: they combine to form the product. Combination reactions are always exothermic. For example barium metal and fluorine gas will combine in a highly exothermic reaction to form the salt barium fluoride:

Ba + F2 = Baf2

• Another example is given by magnesium oxide combining with carbon dioxide:

Mgo + Co2 = Mgco3

• Often, reaction can fall into more than one category. For example the combustion of magnesium metal is also a combination reaction:

2mg + O2 = 2Mgo + heat