Reactions Between HCL and Marble Chips

Reactions Between HCL and Marble Chips

Planning I have decided to investigate the effect of different

concentrations of hydrochloric acid on marble chips. I want to see how

long it takes for 30cm of carbon dioxide to be given off once the acid

and marble chips start reacting. I carried out a preliminary

experiment to see what sort of time ranges I was going to expect

because I wanted to get the concentration levels right otherwise I

could have been waiting for a long time. I didn't have that sort of

time in the laboratory to wait around. In this investigation I will be

using the following apparatus, one conical flask to put the marble

chips in and also to put the acid in so they react. One bung to seal

the top of the conical flask. A piece of delivery tube, this carries

the gas to the measuring cylinder. Two measuring cylinders, one to

measure the amount of acid and water to make my acid concentrations,

and the other which is slightly bigger to collect the gas during the

reaction so I know when the amount I desire has been collected. One

clamp and clamp stand to keep the measuring cylinder steady when it is

collecting the gas. One water bath to store water in and helping to

see how much gas had been collected. One balance to measure the weight

of the marble chips. I will use safety glasses at all times because I

am using acid and I will get the teacher to check my experiment before

I start. Diagram: There are some factors that affect the rate of a

reaction. They are: Concentration of reactants Temperature of

reactants Surface area of reactants Use of catalysts Presence of light

These factors affect the number of collisions of reactant particles,

and this, in turn, affects the rate of the reaction. If the number of

collisions per second increases then the rate of the reaction will

increase. I will be investigating the effect of concentration on the

rate of a reaction. If a solution is made more concentrated, then