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Reason why calcium hydroxide is used to detect carbon iv oxide while potassium hydroxide solution is not?
Wiki User
∙ 7y ago
Both hydroxides will react with carbon dioxide to form their respective carbonates. Calcium carbonate is largely insoluble in water and so it will form a visible solid precipitate. Potassium carbonate is soluble in water, so there will be no visible change to the solution.
Wiki User
∙ 7y ago
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Is the valency of potassium plus 1 or negative 1 and reason why?
1
What are some reasons for taking a calcium supplement?
There are many reasons that an individual can take calcium supplements. The reason may be to avoid a calcium deficiency, as that may cause a lot of health problems.
How do you prepare Fehling solution?
fehling's solution is dark blue at room temperature "Fehling's solution" is prepared by dissolving separately 34'639 grammes of copper sulphate, 173 grammes of Rochelle salt, and 71 grammes of caustic soda in water, mixing and making up to l000 ccs.; 10 ccs. of this solution is completely reduced by o 05 grammes of hexose
What cause Calcium in eye?
There are several different conditions that can cause calcium deposits in the eye. These include hypocalcemia, gout, renal failure, and chronic inflammation.
What is the reason of heating solution during redox titration?
This is far to be a rule for this titration.
What is true about the relative concentrations of hydronium and hydroxide ions in an acid solution?
In an acidic solution, the relative concentration of hydronium ions will always be higher than hydroxide ions. This means that the relatively concentration of hydroxide ions will always be lower than hydronium ions in an acidic solution. The reason for this is that in a neutral solution, the concentration of both hydronium ions and hydroxides ions are equal (both are 10-7). By making the concentration of hydronium ions greater than the concentration of hydroxide ions, the solution becomes acidic.
When a solution has more H ions than OH- ions is it an acid or base?
base because basic solutions can decompose to hydroxide ions when hydrogen is in a solution it is an acid for the same reason. hope that helps!
Is potassium hydroxide an alka li?
Potassium is a Alkali metal.In order to figure out what the metal is, look at the periodic table. The fist column down contains all the Alkali metals. The second Column down contains all the Alkaline Earth Metals. The Last Column to the right contains all the Nobel gases. The Column before that contains all the Halogens.All above is true...The reason WHY the first column is called the "alkali metals", is that when they react with water they form "alkali" salts (that is... bases.) For example...Potassium + water => potassium hydroxide + hydrogen gasPotassium hydroxide is basic (alkaline).BTW, the alkaline earth metals also for basic salts, but the alkali metals are alot better at it.
Why zinc hydroxide is soluble in excess of sodium hydroxide solution?
Zinc hydroxide Zn(OH)2 is an inorganic chemical compound. It also occurs naturally as 3 rare minerals: wülfingite (orthorhombic), ashoverite and sweetite (both tetragonal).Like the hydroxides of other metals, such as lead, aluminium, beryllium, tin and chromium, zinc hydroxide (and zinc oxide), is amphoteric. Thus it will dissolve readily in a dilute solution of a strong acid, such as HCl, and also in a solution of an alkali such as sodium hydroxide.It can be prepared by adding sodium hydroxide solution, but not in excess, to a solution of any zinc salt. A white precipitate will be seen: Zn2+ + 2OH- → Zn(OH)2.If excess sodium hydroxide is added, the precipitate of zinc hydroxide will dissolve, forming a colorless solution of zincate ion: Zn(OH)2 + 2OH- → Zn(OH)42-. This property can be used as a test for zinc ions in solution, but it is not exclusive, since aluminum and lead compounds behave in a very similar manner. Unlike the hydroxides of aluminum and lead, zinc hydroxide also dissolves in aqueous ammonia to form a colourless, water-soluble ammine complexThe reason that the zinc hydroxide will dissolve is because the ion is normally surrounded by water ligands; when excess sodium hydroxide is added to the solution the hydroxide ions will reduce the complex to a -2 charge and make it soluble. When excess ammonia is added, it sets up an equilibirum which provides hydroxide ions; the formation of hydroxide ions causes a similar reaction as sodium hydroxide and creates a +2 charged complex with a co-ordination number of 4 with the ammonia ligands - this makes the complex soluble so that it dissolves
How are synthetic detergents better than soaps?
They can be used in hard water as well in acidic solution. The reason being that sulphonic acids and their calcium and magnesium salts are soluble in water but the fatty acids and their calcium and magnesium salts are insoluble.
Does a metallic element form an acid or base when it reacts with water?
Usually a metallic element will not react with water and so will not change pH. However, a highly reactive metal, such as sodium, potassium or calcium will react with water to form the corresponding metal hydroxide, and so forms a base.
Is calcium carbonate or potassium carbonate more soluble in water?
Yes and no depending on what you mean by the word potassium. By itself, potassium is a metal and cannot dissolve in water because it reacts with water very rapidly. So rapidly and with so much energy given off, the hydrogen the reaction produces ignites! The reason this happens is that potassium as an element (metal) has a loosely held single electron in its atom. The atom is so very high strung with this loose electron and would be so much more relaxed if it got rid of it that it'll practically give it to almost any other atom it comes in contact with. That's why potassium doesn't exist in nature as an element and why it reacts with water, even the oxygen in air. After it gives up that single electron, it becomes an ion and part of an ionic compound. It the case of reacting with water - potassium hydroxide (KOH). The OH comes from ripped apart water (H2O) and the left over H becomes H2 when it meets up with another left over H atom. Potassium ion, on the other hand is very soluble in water. So, is it possible that potassium ions can exist in water? Yes! Is it possible that potassium metal can exist in water? No! Never!
Is Ibuprofen soluble in sodium hydroxide?
Ibuprofen's main group ( the parent group) is propanoic acid (CH3-CH2-COOH), and with no basic functional groups the molecule is overall acidic. Acids are inonized in basic solutions solubilizing them. NaOH, sodium hydroxide, in solution displays such basic properties and is actually commonly dispensed with ibuprofen for this reason.
Why is metal potassium stored under oil?
Potassium, sodium, and lithium all react violently in the presence of water. The hydroxide compounds of all three metals are much more thermodynamically stable than the pure substance. This means that they will release energy (in the form of heat in this case) when they react with the water to form the hydroxide compounds. All three metals will actually ignite and burn under water. The reason they are stored in oil, is because oil and water (or moisture in the air) don't mix.Read more: Why_are_potassium_sodium_and_lithium_stored_in_a_jar_of_oil
Why Barium hydroxide is Soluble in water reason in brief?
I think both are chemicals
Why is sodium hydroxide used in hydroxide tests?
For the simplest reason of all: it's the easiest, most cost-effective hydroxide to get. It's called lye and every grocery store in America has it for a really cheap price.
What gas turns limewater milky?
limewater is Ca(OH)2the reason for CO2 to turn limewater milky is becauseCa(OH)2 (aq) + CO2 (g) → CaCO3 (s) + H2O (l)the precipitate CaCO3 formed.I think SO2 could also turn limewater milky because the product CaSO4 is only slightly soluble in water, so most of it remains as a precipitate.Ca(OH)2 + SO2 ---> CaSO4 + H2O
