Changing Concentration of Hydrochloric Acid

How will changing the concentration of hydrochloric (HCl) acid affect the rate of hydrogen gas (H2) production during the reaction with magnesium (Mg), using the pressure buildup by hydrogen gas?

Introduction

Factors that influence rates of reactions include change in concentration, temperature, surface area, or the addition of a catalyst. This experiment will specifically investigate the effect of concentration change of the reactants upon the rate of reaction, using hydrochloric acid and magnesium strip. The concentration of HCl acid solution is controlled through serial dilution.

What Citation Formats Do You Support?

We hear “Can you write in APA or MLA?” all the time—and the answer’s a big yes, plus way more! Our writers are wizards with every style—APA, MLA, Harvard, Chicago, Turabian, you name it—delivering flawless formatting tailored to your assignment. Whether it’s a tricky in-text citation or a perfectly styled reference list, they’ve got the skills to make your paper academically spot-on.

2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g)

This experiment in particular will explore how the pressure changes as the above reaction proceeds. Because the reaction produces hydrogen gas as a product, building up more pressure within the confined space of a test tube, a pressure sensor will measure the rate of reaction. After the reaction begins, approximately 20 seconds of data will be collected with each trial, in order to formulate a common trend (a graph of pressure over time). With average slopes of different amount of concentrations, a linear regression line will then be created to sketch the trend, regarding the effect of concentration upon pressure-the rate of reaction.

Hypothesis

According to Collision Theory, the reactant particles must collide together, and thus creating a reaction. Because increasing the concentration of HCl acid solution also means an increase in the number of hydrogen and chloride ions, collision between the reactant particles increases as well, resulting in more products-hydrogen gas. With more production of hydrogen gas in the confined test tube, pressure will build up.

Therefore, if-at a given period of time-the concentration of HCl acid solution increases, then the rate of reaction will increase accordingly, because more collisions will occur, producing hydrogen gas at a higher rate.

Are Paper Services Legal?

Yes, completely! They’re a valid tool for getting sample papers to boost your own writing skills, and there’s nothing shady about that. Use them right—like a study guide or a model to learn from—and they’re a smart, ethical way to level up your grades without breaking any rules.

• Variables
• Variable description
• Method of measuring variable
• Dependent variable

Pressure buildup due to the reaction between hydrochloric acid solution and magnesium

During the reaction, H2gas is produced, thus increasing the volume within the confined space of a test tube and increasing the pressure. This change will be recorded by a pressure sensor. Collecting data for about 10 seconds before the injection of the magnesium strip, the measurement of pressure will continue for about 20 seconds after the reaction begins. Three trials are required for each concentration of HCl solution to minimize random error.

Rate of reaction

How Much for a Paper?

Prices start at $10 per page for undergrad work and go up to $21 for advanced levels, depending on urgency and any extras you toss in. Deadlines range from a lightning-fast 3 hours to a chill 14 days—plenty of wiggle room there! Plus, if you’re ordering big, you’ll snag 5-10% off, making it easier on your wallet while still getting top-notch quality.

Using the more accurate initial rate of the reaction, about 10 seconds of the graph after the reaction begins will be used to create a slope of change in pressure over time.

Independent variable

Concentration of HCl solution

Using serial dilution along with apparatus such as micropipette and flask, the 1M hydrochloric acid solution will be diluted into 0.5M, 0.25M, 0.125M, and 0.0625M.

Controlled variables

Mg strip (length)

Will Anyone Find Out I Used You?

Nope—your secret’s locked down tight. We encrypt all your data with top-tier security, and every paper’s crafted fresh just for you, run through originality checks to prove it’s one-of-a-kind. No one—professors, classmates, or anyone—will ever know you teamed up with us, guaranteed.

Using a ruler and scissor, the Mg strip will be cut into 15 pieces, each being 1cm.

Volume of hydrochloric acid solution

For each concentration, 3cm3of hydrochloric acid solution is used, accurately measured by a pipette.

Temperature of reactants

Do You Rely on AI?

Not even a little—our writers are real-deal experts with degrees, crafting every paper by hand with care and know-how. No AI shortcuts here; it’s all human skill, backed by thorough research and double-checked for uniqueness. You’re getting authentic work that stands out for all the right reasons.

The temperature remains constant at room temperature (approx. 25 degrees Celsius) throughout the entire experiment.

Shaking of the test tube

To create the most accurate results possible, physical motion when slightly shaking the test tubes must be repetitive in the same way for each trial.

Size of the test tube

Why Are You Top for Research Papers?

Our writers are Ph.D.-level pros who live for nailing the details—think deep research and razor-sharp arguments. We pair that with top plagiarism tools, free revisions to tweak anything you need, and fast turnarounds that don’t skimp on quality. Your research paper won’t just shine—it’ll set the bar.

Because different sizes of test tubes would mean different volumes as well, constant size (volume) is essential, preferably small so that the reaction will be more conspicuous. To do this, 15 identical test tubes are used.

Table 1: List of Variables

Apparatus and Materials

• 1M hydrochloric acid solution
• Distilled water
• Magnesium strip
• Flask (50cm3)
• Pressure sensor
• Logger Pro
• Micropipette
• 15 identical test tubes
• Sandpaper
• Scissor

Procedure

Put 20cm3 of 1M HCL solution in the flask and dilute it to 0.5M with 20cm3 of distilled water.

Using the serial dilution as in step 1, prepare 10cm3 solutions with concentrations of 1M, 0.5M, 0.25M, 0.125M, and 0.0625M.

Who’s Behind My Essays?

You’re in good hands with degree-holding pros—many rocking Master’s or higher—who’ve crushed our tough vetting tests in writing and their fields. They’re your partners in this, hitting tight deadlines and academic standards with ease, all while tailoring every essay to your exact needs. No matter the topic, they’ve got the chops to make it stellar.

Add 3 cm3 of each solution into labeled test tubes using the micropipette.

Repeat step 3 to prepare three test tubes of each solution (15 in total)

Cut out the magnesium strip into 15 pieces of 1cm and sand them with sandpaper.

Put the cut out magnesium strip into the test tube with 1M HCl solution.

Is My Paper Original?

100%—we promise! Every paper’s written fresh from scratch—no AI, no copying—just solid research and proper citations from our expert writers. You can even request a plagiarism report to see it’s 95%+ unique, giving you total confidence it’s submission-ready and one-of-a-kind.

Then quickly cover the test tube with the pressure sensor.

Start collecting data while shaking the test tube in a consistent manner for about 25 seconds after the reaction begins.

Repeat steps 6 to 8 for all other test tubes.

Data Collection and Processing

 

Can You Do Any Citation Style?

Yep—APA, Turabian, IEEE, Chicago, MLA, whatever you throw at us! Our writers nail every detail of your chosen style, matching your guidelines down to the last comma and period. It’s all about making sure your paper fits academic expectations perfectly, no sweat.

 

 

 

Qualitative Data

Can I Adjust Instructions Later?

Absolutely—life happens, and we’re flexible! Chat with your writer anytime through our system to update details, tweak the focus, or add new requirements, and they’ll pivot fast to keep your paper on point. It’s all about making sure the final draft is exactly what you need, no stress involved.

After the injection of the magnesium strip into the HCl solution, it effervesces and pressure inside the test tube begins to build up.

With test tubes of higher concentration, the pressure seems to be higher within the time limit and more bubbles form.

At the end of the reaction, the solution’s color changed to transparent yellow.

The reacted solution (product) gives off a foul smell.

How Do I Get Started?

It’s super easy—order online with a few clicks, then track progress with drafts as your writer works their magic. Once it’s done, download it from your account, give it a once-over, and release payment only when you’re thrilled with the result. It’s fast, affordable, and built with students like you in mind!

Processed Data

 

 

 

Data Presentation

1 0.5 0.25 0.125 0.0625

How Fast for Rush Jobs?

We can crank out a killer paper in 24 hours—quality locked in, no shortcuts. Just set your deadline when you order, and our pros will hustle to deliver, even if you’re racing the clock. Perfect for those last-minute crunches without compromising on the good stuff.

Uncertainties

Standard Deviation

Standard deviation was calculated and represented in the rate of reaction vs. concentration graph as error bars.

 

 

 

 

 

Can You Handle Complex Subjects?

For sure! Our writers with advanced degrees dive into any topic—think quantum physics or medieval lit—with deep research and clear, sharp writing. They’ll tailor it to your academic level, ensuring it’s thorough yet easy to follow, no matter how tricky the subject gets.

Standard deviation for different concentration of HCl solution

Standard deviation was calculated by a graphing calculator.

Uncertainty due to the serial dilution of HCl solution

Uncertainty due to 1cm3

Uncertainty during dilution & measuring pressure (?)

How Do You Meet Prof Standards?

We stick to your rubric like glue—nailing the structure, depth, and tone your professor wants—then polish it with edits for that extra shine. Our writers know what profs look for, and we double-check every detail to make sure it’s submission-ready and grade-worthy.

Conclusion

In Figure 1, the trend of different concentrations of reactants influencing the rate of reaction is illustrated. The linear regression line demonstrates the clear change in rate of reaction, according to the change in concentration-the lower the concentration, the slower the rate of reaction. Hence, the initial hypothesis, stating the direct relationship between concentration and rate of reaction, is justified and validated.

Evaluation

Shown by Table 4, in which the standard deviations for each concentration of HCl solution are calculated, the results of this experiment are fairly precise, but not to a great extent. Moreover, uncertainties created during the preparation of the experiment, as with the management of apparatus and materials such as the gas pressure sensor, flask, and micropipette decreases the accuracy. Although Figure 1, the graph containing the general trend of concentration’s effect upon the rate of reaction seems to validate the hypothesis, the rate of reaction of 0.25M HCl solution stands out of the trend, decreasing the validity of this experiment’s results.

More factors that may have hindered obtaining accurate results of this experiment include:

• Error
• Impact
• Improvements

Using hand to shake the test tubes for faster reaction rate

What’s Your Editing Like?

Send us your draft and tell us your goals—we’ll refine it, tightening arguments and boosting clarity while keeping your unique voice intact. Our editors work fast, delivering pro-level results that make your paper pop, whether it’s a light touch-up or a deeper rework.

Any non-perceptible (by humans) changes influenced each reaction to proceed differently, ultimately creating different circumstances for each trial. This change in circumstances is crucial since it greatly hinders accurate results.

The use of a vibration plate instead may reduce error as it is more consistent. Reproducible circumstances can be better achieved.

Tags: Academic Paper Assistance, Affordable College Homework, APA Citation Assignment Help, Assignment Help Australia