I-Calculator ye-Molarity
Iingxaki zobuninzi bezinto eziphilayo, ubunzima, ubunzima bezinto eziphilayo okanye ubukhulu bezinto eziphilayo.
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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 ebuza rhoqo
Yintoni i-molarity?
Ubukhulu bemolarity (M) yimoles ye-solvent kwilitha ye-solvent. Ukunqunyulwa kwe-58.44 g ye-NaCl (1 mole) kwilitha enye inika i-1 M solution.
Ndiyifumana njani i-mole ukusuka kwigram?
Yahlula umthamo wegram ngesisindo semolar segram/mol. 117 g yeNaCl yi 117 / 58.44 = 2 moles.
Ndifuna ubisi oluphi na olusolute ukuze ndifumane i-molarity nevolumu efanelekileyo?
Iimoles ezifunekayo = ubukhulu bemolar × ubukhulu belithare, ngoko ubunzima bomzimba = iimoles × ubunzima bemolar. Kwi-250 mL ye-0.1 M NaCl eyi-0.1 × 0.25 = 0.025 mol, malunga ne-1.46 g. Misela "ukulungisa" ubunzima bemolele ukuze i-calculator iyenze.
Ingaba i-molecularity ilingana nelitha yamanzi okanye ilingana nelitha yotywala?
Kwilitha nganye yento egqityiweyo. Khusela into egqityiweyo, emva koko ubeke into egqityiweyo phezulu ukuya kumqondiso ukuze ufike kumlinganiselo omiselweyo - ungayifaka nje kwilitha epheleleyo yamanzi, enokuthi ibonelele ngobukhulu obuncinci obukhulu kunye noxinzelelo oluphantsi.
Yintoni utshintsho phakathi kwe-molarity ne-molality?
I-Molarity yi-moles nganye yelitha yento ecoliweyo kwaye itshintshela kancinci ngeqondo lobushushu kuba ubukhulu butshintsha. I-Molarity yi-moles nganye yekilogram yento ecoliweyo kwaye ixhomekeke kwiqondo lobushushu. Eli sixhobo sibala i-molarity.
Ndiyikhupha njani i-stock solution?
Sebenzisa iC₁V₁ = C₂V₂: iimoles zihlala, ngoko uxinzelelo lwexesha lomthamo phambi kokulingana emva. Ukwenza i-1 L ye-0.5 M ukusuka kwi-2 M ye-stock ufuna i-0.5 × 1 / 2 = 0.25 L ye-stock ephakamileyo ukuya kwi-1 L.
API — sebenzisa le calculator ukusuka kwikhowudi
Nceda le khadi lemali njengendawo esemva ye-JSON ekhululekileyo - akukho qhosha lifunekayo. Thumela amaxabiso endawo ezantsi njengeparameter yombuzo okanye i-JSON. Nantoni na oyenzayo isebenzisa okungagqibekanga okufanayo eli phepha ligqityiwe ngaphambili; iparameter engaziwayo yi 400, ayikho i zero ekhululekileyo. Funda i-API epheleleyo →
Incopho yesiphelo
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);Results are estimates for general guidance only, not financial, medical or tax advice.