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How do you separate unused zinc after reacting excess zinc with dilute sulphuric acid?
Wiki User
∙ 11y ago
When excess zinc metal is used in a reaction, it can be removed by simple filtration, as long as the particles are big enough. If the zinc particles are too small to be removed by filtration, other techniques such as centrifugation must be employed.
Wiki User
∙ 11y ago
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Type of urine excreted when the water content of the body is low?
Concentrated, the more excess water is present in the body the more dilute the urine becomes.
Why can you drink vinegar but you cannot drink a dilute solution of battery acid?
Acetic Acid vs. Sulphuric AcidThe pH of vinegar is typically around 2.5 while the pH of battery acid is usually around 0.8. The concentration of hydrogen ions in battery acid is hence much higher than in vinegar. This lower pH is more unnatural for the body and can have harmful effects. Also vinegar's acidity is caused by acetic acid while battery acid is sulphuric acid. It is likely that the body is more tolerable to acetic acid because it is a weak acid. Although you can drink vinegar straight, but I wouldn't drink too much of it -- it will upset your stomach if you drink a lot, and like anything else, will kill you if consumed in large excess! Weak vs. Strong AcidThe pH of vinegar and a diluted solution of battery acid (which is sulfuric acid, or H2SO4) can be exactly the same. The key word is "diluted." Yes, pure battery acid is at a very low pH, but if sufficiently diluted, it can have a pH greater than that of vinegar! The pH of an acid solution is determined by two factors: the strength of the acid (typically characterized by it's Ka or equivalently its pKa) and the concentration of the acid (typically characterized by its molarity). Clearly drinking pure battery acid would kill you very quickly because of the extremely low pH (it would severely burn your mouth and esophagus, among other things)! But drinking even a fairly dilute solution of sulphuric acid would be very bad for you. This is because sulphuric acid is a strong acid, while acetic acid is a weak acid. That means that sulphuric acid dissociates completely in water to form H3O+ and HSO4-. Acetic acid will not dissociate completely and an equilibrium will exist between its protonated and deprotonated form.What does this mean in practice. Vinegar contains about 5-10% acetic acid. This is approximately 1 molar (1 M). The pH of this solution is ~2.5, and this is not harmful.Now if you have the same 1 M concentration, but now of sulfuric acid, what would the pH be? For a 1 M solution of H2SO4, the pH is 0. Yes, zero. The concentration of pure battery acid is about 30-35% sulfuric acid, which is about 6 M. That has a pH of -0.78! Yes, it's negative. So, to get battery acid to have the same pH as vinegar (a pH of 2.5), you'd need it to have a concentration of 0.0032 M, so you'd have to dilute the battery acid by a factor of 2000! That'd be VERY dilute! But you know, I wouldn't want to drink anything, dilute or not, that came out of my car... but that's just me. But really, don't.NOTE: I've found some discrepancy about the pH of battery acid. I've seen the pH of battery acid reported to be about 1, but I've also seen it reported that the concentration of battery acid is 30-35% sulphuric acid. If that percentage is correct, than a such a concentration solution of sulphuric acid would have a negative pH. I'm not sure which is correct, the reported pH of 1 or the concentration of 30%. The two numbers seem to me to be inconsistent.Answer to Note: I would suspect that the reporting of a pH of 1 for that concentration of Sulfuric is based on the limitation of the testing equipment. Most common pH probes are not designed to read that low with any accuracy.It doesn't change the important point of the answer above -- that a solution of sulphuric acid is still MUCH more acidic than the same concentration of acetic acid, even if both are fairly dilute. All that being said, if the sulphuric acid is very very dilute, and I mean VERY dilute, there is nothing dangerous about! But don't try this at home boys and girls...ANOTHER TIDBITSulphuric acid also breaks down the proteins in your tissues. So not only will the low pH burn, the tissues of your body will coagulate. Think cooked egg white or the lack of strength in fork tender meat.
What is seeding process?
Definition:- Such a solution is unstable and excess solute will separate out if the solution is disturbed or an extra particle of solute is added to it .This process is called seeding process.
Does the large intestine store excess material?
It does not store excess material the rectum does that.
When something has a positive charge it has an excess of what elementary particles?
It lacks electrons rather then having an excess of elementary particles, but basically it's an excess of protons.
What is observed when copper oxide is added into excess dilute sulphuric acid?
Copper sulphate + water
Why does zinc hydroxide dissolve in excess dilute sodium hydroxide?
lpkjl
What is the action of dilute hydrochloride on sodium carbonate?
Dilute hydrochloric acid? Carbon dioxide gas escapes and leaves sodium chloride solution, possibly leaving either an excess of acid, or an excess of sodium carbonate.
How many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine with excess methane?
384.5g
How much hcl gas can be produced at stp by reacting 131 g of nacl with excess h2so4?
19
How does drinking excess water cause hyponatremia?
Drinking excess water sometimes causes hyponatremia, because the absorption of water into the bloodstream can dilute the sodium in the blood.
How does back titration differ from a direct titration?
direct titration involves the direct and stepwise addition of a standard titrant to the analyte whilst the back titration involves reacting a standard excess titrant wth an analyte solution of an unknown concentration, then reacting the excess (left over) titrant with an analyte of known concentration to determine the concentration of excess titrant.
Why excess zinc was used in making zinc sulphate crystals?
to ensure that all the sulphuric acid has been used up
How will excess magnesium be removed from sulphuric acid during experiment'?
you can add more H2SO4 to complete the reaction you can add water and then by filtration
How do you remove excess salt from cooked rice?
put some tomato. that will dilute the curry and balance the salt level by karunaidoss.
Why does water make you pee?
Your body takes on excess water and gets rid of what it doesn't need. If excess water was allowed to accumulate in the blood, you would have dilute, watery blood, which would not do its job properly.
What is the Balanced equation for calcium carbonate and hydrochloric acid reacting?
CaCO3 + HCl --> CaHCO3 or with excess of HCl CaCO3 + 2HCl --> CaCl2 +CO2 + H2O
