MCQs || B21

HCl(aq)+NaOH(aq) NaCl(aq)+H 2 O It is Double- Replacement Reactions

Two compounds undergo a change of partners by exchanging atoms to produce two new compounds

One atom replaces another in the compound producing a new compound

Produce two or more products from a single reactant

2Na(s) + Cl 2 (g)  2NaCl(s)

The joining of two or more elements or compounds, producing a product of different composition

Types chemical reactions:

Percent yield

the amount produced when the reaction is performed (in laboratory only will be given)

the maximum amount of product that can be produced (by calculation)

Balance the following equation H2+O2–>H2O

Balance the following equation: N2+H2—>NH3

The molar quantity reactant or product it is coefficient

The total mass of the products must equal the total mass of the reactants.

matter cannot be either gained or lost in the process of a chemical reaction

molar quantity of reactants and products must be relative number and a whole number coefficient

Heat is produced or absorbe Acid and base are mixed together

Formation of a solid (precipitate)