# Chemistry

Help with lab report
Need Help finishing my lab report.KNOWN VALUES ARE V OF HCL=50ML,M=2.188.V OF NAOH=55.3ML,M=2.088.INTIAL TEMP FOR HCL=22.5C,NAOH IS 23C.this is for part A: Mass of final NACL solution assuming that the density of a 1 M Nacl solution is 1.04 g/ml? Heat actually produced from the HCL-NAOH reaction assuming that the heat capacity of a 1 M Nacl solution is 3.93 J/G.C? Moles of water formed in the reaction? Total theoretical heat expected to be produced by forming the number of moles of water assuming that 57,320 J are produced per mole of water formed? Heat absorbed by the calorimeter(heat expected-heat actually produced)? Heat capacity of the calorimeter(heat absorbed by the calorimeter per degree of temperature change)? For Part B: Total mass of the final solution by adding the mass of intial HCL solution(density of 2 M HCL is 1.03 g/ml)the mass of water (D=1.00g/ml)and the mass of magnesium? Heat required to raise MgCl_2 solution to the max temp assuming that heat capacity of your final mgcl2 solution is 3.97 J/G.C? Heat required to raise the calorimeter to the max temp using the value for the heat capacity of the calorimeter as determined in part A of this experiment? Total heat evolved by the reaction by adding the heats required to raise both the solution and the calorimeter to the max temperature? heat evolved per mole of mg? change in enthalpy for the following specific reaction Mg(s)+2H(aq)>>Mg2+(aq)+H2(g)

1. I can get you started but I won't do your lab report for you.
HCl + NaOH ==> NaCl + H2O
HCl = 50 mL x 2.188 M = 109.4 mmols.
NaOH = 55.3 mL x 2.088 = 115.466 mmols.
Total volume = 55.3 + 50 = 105.3 mL and mass is 105.3 mL x 1.04 g/mL = 109.51g
This should get you started. Note however, that I don't see a temperature rise from 22.5/23 C AND I don't see a mass of Mg or what you did with the Mg.

posted by DrBob222
2. Unfortunately i knew the answer to the ones you posted,i just don't know how i can answer the heat capacity one..

posted by Randy
3. You need data for the rise in T when acid/base were reacted. You need rise in T when Mg reacted. Neither of those are shown in your post.

posted by DrBob222

## Similar Questions

1. ### ENGLISH

Hello, what is the format of "affiliation" in a lab report? A lab report? Are you sure this isn't a science assignment?? http://www.google.com/search?hl=en&q=affiliation+lab+report&btnG=Google+Search ??
2. ### chemistry

i have to write lab report based on my determination of chemical formula & in lab we did experiment & found out the formula was cucl2*2h2o, in my lab report i have to start with mole to mole ratio how can i start writing that?
3. ### Chem Lab Help

I wanted to know if any one has done the Determination of ASA Content of Tablets Lab Report. I need help doing the post lab questions
4. ### Chemistry (molarity) (sorta an emergency)

I'm doing a titration lab and writing a lab report where I'm sort of stuck on how exactly to find the concentration of HCl. These are the following info I have from the lab, Equation: HCl(aq)+NaOH(aq)-> H2O(l)+NaCl(aq)
5. ### Chemistry

I did a lab, an kinetics lab (iodide clock) and in my lab report I have to calculate the initial rate in mol L-1 s-1 and I'm not sure how to do that. I have the [I-] and [S2O82-] in mol L-1 already. The reagents are [KI] [NaCl]
6. ### Science

I am trying to find an example of how to write a prediction for a Biology Lab Report. I think a prediction should be written as an if/when statement. Does anyone know of some where that I can find a lab report that includes a
7. ### report

What are key findings? I have to include this in a lab report. Thank you for any help
8. ### physics

for intro in a lab report do u have to write the relevance to the world? ( if yes where would it go , after purpose?)and what would be a good hypothesis in a lab for acceleration due to gravity?
9. ### chemistry

I did a lab on pressure and depth today. This lab was to simply submerge a plastic tube into a large graduated cynlinder to find the relationship between the two. I found that as the depth increases, so does the pressure. One of
10. ### penn foster

i'm typing my lab 2, case 8 radiology report and can't make out one word in the report. "carotery stick" it what it sounds like the lady is saying, but it doesn't make sense and I can't find it in any dictionary. help

More Similar Questions