Mpikirakira
Mamaha ny olana momba ny molekiola, ny lanja, ny lanja molekiola na ny habetsaky ny vahaolana.
Manova ny valin'ny fanoratanao.
Momba ity kapila ity
Molarity is the most common way chemists express concentration: the number of moles of solute dissolved per litre of solution, M = moles / litres, with units of mol/L (also written M). The moles of solute come from its mass divided by its molar mass, moles = mass ÷ molar mass, so the full relationship ties together mass, molar mass, volume and concentration. This calculator solves for any one of molarity, mass of solute, solution volume or molar mass, and accepts the volume in litres or millilitres.
As a worked example, dissolving 58.44 g of table salt (NaCl, molar mass ≈ 58.44 g/mol) in enough water to make 1 litre gives 58.44 / 58.44 = 1 mole in 1 L, a 1 M solution. Dissolve 117 g of NaCl instead and you have 2 moles, which in 1 L is a 2 M solution or, in 500 mL, a 4 M solution. Working backwards, to make 250 mL of 0.1 M NaCl you need 0.1 × 0.25 = 0.025 mol, i.e. 0.025 × 58.44 ≈ 1.46 g.
Molarity is the working currency of the lab bench — preparing standard solutions, diluting stock reagents, running titrations and stoichiometry, and mixing buffers all depend on it. Note that it is defined per litre of final solution, not per litre of solvent, so you dissolve the solute and then top up to the target volume rather than adding it to a pre-measured litre of water.
Fanontaniana matetika
Inona no atao hoe molekiola?
Ny molekyla (M) dia ny moles amin'ny solute isaky ny litatra iray amin'ny famenoana. Ny famenoana 58.44 g NaCl (1 mole) ao amin'ny 1 litatra iray dia manome famenoana 1 M.
Ahoana no ahafahako mahazo moles avy amin'ny grams?
Divide the mass in grams by the molar mass in g/mol. 117 g of NaCl is 117 / 58.44 = 2 moles.
Inona no atao hoe fiteny mifototra amin'ny fiteny sy ny fiteny mifototra amin'ny fiteny?
Moles needed = molarity × volume in litres, then mass = moles × molar mass. For 250 mL of 0.1 M NaCl that is 0.1 × 0.25 = 0.025 mol, about 1.46 g. Set "solve for" to mass to have the calculator do it.
Molarate isaky ny litatra rano ve sa isaky ny litatra rano?
Ho an'ny litatra iray amin'ny vahaolana vita. Avelao hilentika ny vahaolana, avy eo ampio ny vahaolana hatramin'ny marika mba hahatratrarana ny habetsaky ny tanjona - aza ampiana fotsiny amin'ny rano iray litatra izany, izay mety hanome habe kely kokoa sy fihenan'ny fitambarana.
Inona no fahasamihafana eo amin'ny molarité sy ny molalité?
Ny moles isaky ny litatra iray amin'ny famenoana no isan'ny moles, ary miova kely arakaraka ny hafanana satria miova ny habe. Ny moles isaky ny kilograman'ny famenoana no isan'ny moles, ary tsy miankina amin'ny hafanana. Ity fitaovana ity dia mitanisa ny moles.
Ahoana no ahafahako manamaivana ny vahaolana fototra?
Use C₁V₁ = C₂V₂: the moles stay constant, so concentration times volume before equals after. To make 1 L of 0.5 M from 2 M stock you need 0.5 × 1 / 2 = 0.25 L of stock topped up to 1 L.
API — mampiasa io milina fanisana io avy amin'ny rindran'asa
Antsoy ho toy ny farany JSON malalaka ity milina fanisana ity - tsy mila famaha. Mandefa ireo sanda eo amin'ny sehatr'asa etsy ambany ho toy ny mpizaratry ny fanontaniana na JSON. Ny zavatra tsy voalaza dia mampiasa ny sanda tsotra efa nameno ity pejy ity; 400 ny sanda tsy fantatra, tsy aotra tsy misy feo. Vakio ny tahirin-kevitra API feno →
Endpoint
GET https://calculator.free/api/v1/molarity/curl
curl "https://calculator.free/api/v1/molarity/?solve=molarity&mass=58.44&molar_mass=58.44&volume=1"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/molarity/?" + new URLSearchParams({
"solve": "molarity",
"mass": "58.44",
"molar_mass": "58.44",
"volume": "1"
}));
const data = await r.json();
console.log(data.results);Ny voka-pikarohana dia natao ho an'ny torohevitra ankapobeny ihany, tsy torohevitra ara-bola, ara-pitsaboana na ara-bola.