Plan,design and conduct an investion to find out whether the amount of heat produced will depend on increase on concentration of Hcl when Hcl reacts with an excess zn.you may investigate either the amount of heat produced or the amount of gas produced(make choice from the start to avoid confusion).you are also not restricted to Hcl and zn as reactants only,you may decide to use your own choice of reactants but check if the reaction is exothermic for heat produced

To find out whether the amount of heat (gas) produced will depend on an increase on the concetration of hcl when hcl reacts an execess zn

yes

increasing in temparature will cause increase in volume and pressure remain constant

variables

To investigate whether the amount of heat produced depends on the increase in concentration of HCl when it reacts with an excess of Zn, you can follow these steps:

1. Plan your experiment:
a. Identify the reactants: In this case, the reactants are HCl (hydrochloric acid) and Zn (zinc).
b. Choose the variable to measure: You have two options - either measure the amount of heat produced or the amount of gas produced. Select one of them as your dependent variable to investigate.
c. Determine the independent variable: In this case, it will be the concentration of HCl. You will vary the concentration and observe its effect on the dependent variable.
d. Decide on the range of concentrations: Plan a range of HCl concentrations to investigate. For example, you may choose concentrations of 0.1M, 0.2M, 0.3M, and so on.
e. Consider safety precautions: Ensure you are working in a well-ventilated area and wear appropriate safety equipment like gloves and goggles.

2. Design the experiment:
a. Set up a control group: Before altering the concentration, establish a control group where you measure the dependent variable without any changes.
b. Set up test groups: Prepare different test groups by varying the concentration of HCl. For example, prepare separate test groups with 0.1M, 0.2M, 0.3M, and so on.
c. Measure the dependent variable: Depending on your choice, either measure the amount of heat produced or the amount of gas evolved in each test group, using appropriate instruments.
d. Repeat the experiment: Conduct multiple trials for each concentration to ensure accuracy and reliability of your results.
e. Maintain other variables: Keep all other factors constant, such as temperature, pressure, and the amount of Zn.

3. Conduct the experiment:
a. Assemble the apparatus: Set up the equipment required for the experiment, which may include reaction vessels, a thermometer, a calorimeter (for heat measurement), or a gas collection setup (for gas measurement).
b. Prepare the solutions: Prepare different solutions with varying concentrations of HCl. Ensure the excess Zn is added to each test group.
c. Start the reaction: Begin the reaction by adding the solutions together in each test group. Make sure to record the time when the reaction starts.
d. Record measurements: Measure and record the dependent variable (heat produced or gas evolved) at regular intervals or until the reaction appears to be complete.
e. Repeat the experiment: Repeat the entire process for each different concentration of HCl.
f. Compile your data: Organize and calculate the average values for each concentration.

4. Analyze and interpret the results:
a. Plot a graph: Construct a graph with the concentration of HCl on the x-axis and the dependent variable (heat produced or gas evolved) on the y-axis.
b. Look for patterns: Analyze the graph to determine if there is a clear relationship between the concentration of HCl and the dependent variable. For example, increasing concentration may result in an increase or decrease in the measured values.
c. Draw conclusions: Based on the trends observed, draw conclusions about whether the amount of heat produced or gas evolved depends on the increase in HCl concentration. Explain the reasoning behind your conclusions.

Remember to ensure accuracy, safety, and adherence to scientific methodology throughout the experiment.