I-Calculator ye-Molarity
Ixazulula i-molarity, i-mass, i-molar mass noma ivolumu ye-solvent.
Iziphetho zivuselelwa uma ubhala.
Malunga nale khadi
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.
Imibuzo ebuzwa kaningi
Yini i-molarity?
I-Molarity (M) yi-moles ye-solvent ngalinye lelitha le-solvent. Ukususa i-58.44 g ye-NaCl (1 mole) ku-1 litre kunikeza i-1 M solution.
Ngiyithola kanjani i-mole kusuka ku-gram?
Yabelana umthamo ngegramu ngesisindo esingu-molar nge-g/mol. 117 g ye-NaCl yi-117 / 58.44 = 2 mols.
Ingabe ngidinga inani elikhulu le-solvent ukuze ngithole i-molarity nevolumu?
Ama-mole adingekayo = ubukhulu × ububanzi belitha, bese ubukhulu = ama-mole × ubukhulu obuncane. U-250 mL we-0.1 M NaCl okungu-0.1 × 0.25 = 0.025 mol, cishe ama-1.46 g. Setha "ukulungisa" ubukhulu ukuze i-calculator ikwenze.
Ingabe i-molecularity ilingana nelitha ngalinye lamanzi noma ilingana nelitha ngalinye le-solvent?
Ilitha ngalinye le-solvent eqediwe. Ukukhipha i-solvent, bese ungeza i-solvent kuze kube yilapho uthola khona umthamo ofuna ukuwufinyelela - ungayifaka nje ku-litre egcwele yamanzi, okuzokunikeza umthamo omkhulu futhi ophansi.
Yini ushintsho phakathi kwe-molarity ne-molality?
I-Molarity yi-moles ngalinye lelitha le-solvent futhi ishintsha kancane ngokushisa ngoba ivolumu ishintsha. I-Molarity yi-moles ngalinye le-kilogram ye-solvent futhi ihlala ikhululekile ngokushisa. Lezi zinto zibala i-molarity.
Ngiyisusa kanjani i-stock solution?
Sebenzisa i-C₁V₁ = C₂V₂: ama-moles ahlala njalo, ngakho-ke ukucindezeleka kwezikhathi zobubanzi ngaphambi kokulingana ngemuva. Ukwenza i-1 L ye-0.5 M kusuka ku-2 M impahla ufuna i-0.5 × 1 / 2 = 0.25 L impahla efinyelela ku-1 L.
API — sebenzisa le calculator kusuka kukhodi
Nquma le calculator njenge JSON evulekile yendawo yokuqeda - akukho isithonjana esidingekayo. Thumela amaxabiso endawo ngezansi njengezilungiselelo zombuzo noma i-JSON. Noma yini ongayishiya isebenzisa iphutha elifanayo elifakwe ngaphambili lekhasi; ipharamitha engaziwa yi-400, ayikho i-zero emnyama. Funda i-API egcwele →
Ingxenye yendawo
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);Izibalo ziyisilinganiso esisetshenziswa ukuqondisa kuphela, hhayi ukucebisa ngezimali, ukwelashwa noma ukukhokha.