Chemistry, 02.10.2019 16:30 hsjsjsjdjjd

Hi i was wondering if anyone could walk me through a virtual titration lab i have absolutely no idea what im doing and i just really need to understand it

Answers: 1

Show answers

Answers

I don't know what program you are using but in the past when I had to do virtual titration labs the steps were as fallows:
1. Choose what type titration you are doing (usually base into acid where base is the titrant and acid is the analyte)
2. Decide what type of titrant you want and what concentration you want it at. (usually NaOH or any other strong base)
3. Decide what type of analyte you want. (usually some sort of strong or weak acid)
4. Choose the indicator you want to use. (the most common indicator is Phenolphthalein)
5. Add titrant to the analyte (base into acid) until a color change happens and record the volume of titrant used.
6. Use the fact that [titrant]*volume =moles of titrant used ([titrant]=molarity of titrant and volume is the volume from step 5)
7. find the number of moles of analyte consumed by multiplying the moles of titrant found in step 6 by the molar ratio of how the titrant and analyte react. (usually this ratio is 1 meaning 1mol of titrant will react with 1mol of analyte but it can be different)
8. Now that you know the moles of analyte in the solution you can find the concentration of the analyte by dividing what you got in step 7 by the volume of analyte you used.

It is sort of hard explaining what to do without knowing what kind of titration you are doing and what the analyte and titrant is but these are general steps that should work for what ever you are doing.

I hope this helps. Let me know if you have any further questions or need anything to be clarified.

Answer from: Quest

Answer: abeexplanation:

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

Answer from: Quest

answer: e. sour taste

explanation: acids are those substances which dissociates in water to give $h^+$ ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

$hcl\rightarrow h^++cl^-$

bases are those substances which dissociates in water to give $oh^-$ ions or accepts $h^+$ ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

$naoh\rightarrow na^++oh^-$

$nh_3+h^+\rightarrow nh_4^+$

Another question on Chemistry

Chemistry, 22.06.2019 00:00

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

Answers: 2

Answer

Chemistry, 23.06.2019 01:00

Which process results in the release of energy stored in the products of photosynthesis? a. polymer synthesis b. depolymerization c. digestion d. cellular respiration

Answers: 1

Answer

Chemistry, 23.06.2019 12:30

All chemicals, even safe chemicals, such as sodium chloride( table salt), are toxic if exposure is high enough. (true or false)

Answers: 2

Answer

Chemistry, 23.06.2019 14:20

Timed ! in which of these statements are protons, electrons, and neutrons correctly compared? quarks are present in protons and neutrons but not in electrons. quarks are present in protons, neutrons, and electrons. quarks are present in neutrons and electrons but not in protons. quarks are present in protons and electrons but not in neutrons.

Answers: 1

Answer

You know the right answer?

Hi i was wondering if anyone could walk me through a virtual titration lab i have absolutely no idea...

Questions