How does changing the concentration of hydrochloric acid alter the rate of its reaction with marble chips

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How does changing the concentration of hydrochloric acid alter the rate of its reaction with marble chips.

A reaction is when two particles (reactants) join to form a new product or products . A rate is a measure of how fast or how slow something is. Rate is a measurement of the change that happens in a single unit of time. The rate of a chemical reaction is how fast the reactants react. To find a rate of reaction you measure the amount of product given off by the reaction in a unit of time .

In this piece of coursework I will be investigating whether the concentration of hydrochloric acid alters the rate of reaction with marble chips . In this experiment hydrochloric acid is added to marble chips (calcium carbonate) . The two reactants collide with each other the hydrochloric acid acts as a catalyst for the two reactants which causes particles from the reactants to collide into one another the higher the concentration of acid molecules the faster the gas will be given off. The rate of reaction is increased by three factors .
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* Higher temperatures Temperature alters the rate of a reaction by supplying the reactant particles with more energy, the more energy the reactants have the faster they move around increasing they're are chance of bumping into one another and having a successful collision

* The greater the surface area of the reactants the more particles are available for a successful collision.

* Concentration effects the rate of a reaction because the higher the concentration of particles the greater the chance of a successful collision.

The equation for this experiment is:

HCL+CACO3=CO2 (hydrochloric acid + ...

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