RESEARCH METHODOLOGY

Detailed explanation-1: -The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically.

Detailed explanation-2: -The rate of reaction tells us how fast a reaction is happening. It depends on certain factors, like concentration of the reactants, temperature and whether a catalyst is present. On a graph, reaction rate is equal to the gradient-the steeper the line, the faster the rate of reaction.

Detailed explanation-3: -1 Answer. This is largely to do with how much of the reactants are present. At the start of the reaction, when we first put magnesium in the hydrochloric acid, there is 100% of the magnesium to react with. As a result there will be more successful collisions between the reactant particles.

Detailed explanation-4: -Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.