Molarity Calculator
Kupeza molarity, maselo, maselo molar kapena kutalika kwa mchere.
Zithunzizi zimasintha monga momwe mumalemba.
Zachidule
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.
Mafunso ofunsidwa nthawi zambiri
Kodi ndi chiyani molarity?
Molarity (M) ndi moles wa solute pa lita ya mankhwala.Kusungunuka 58.44 g wa NaCl (1 mole) mu 1 lita amapatsa 1 M mankhwala.
Momwe ndingapeze moles kuchokera ku gramu?
Kugawa mlingo wa gramu ndi mlingo wa molar mu g / mol. 117 g ya NaCl ndi 117 / 58.44 = 2 moles.
Kodi ndiyenera kuchotsa bwanji madzi osungunuka kuti ndipeze molarity ndi volume yoyenera?
Moles zofunika = molarity × kutalika mu lita, ndiye masa = moles × molar masa. Kwa 250 mL ya 0.1 M NaCl kuti ndi 0.1 × 0.25 = 0.025 mol, za 1.46 g. Set "kuchotsa kwa" ku masa kuti ndi calculator kuchita izo.
Kodi molarity pa liwiro la madzi kapena pa liwiro la mchere?
Pa lita imodzi ya mankhwala omaliza. Kusungunuka wa solute, ndiye kuwonjezera wosungunuka mpaka kusonyeza kuti afike kulenga khalidwe — si basi kuwonjezera izo kwa lita imodzi ya madzi, zomwe zidzapatsa pang'ono zikuluzikulu khalidwe ndi ochepa kusonkhana.
Kodi pali kusinthana pakati pa molarity ndi molality?
Molarity ndi moles pa lita ya mchere ndi kusinthika pang'ono ndi kutentha chifukwa cha kusintha kwa kuchuluka. Molality ndi moles pa kilogram ya wosungunuka ndi kutentha-opanda.
Kodi ndingatani kuti ndichepetse chithandizo cha stock?
Kuti mupange 1 L ya 0.5 M kuchokera ku 2 M stock muyenera 0.5 × 1 / 2 = 0.25 L ya stock yokhala ndi 1 L. Kuti mupange 1 L ya 0.5 M kuchokera ku 2 M stock muyenera 0.5 × 1 / 2 = 0.25 L ya stock yokhala ndi 1 L.
API — kugwiritsa ntchito izi calculator kuchokera code
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Chithunzi
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);Zimenezi ndi zowerengera zokhudzana ndi malangizo amtundu uliwonse, si zokhudzana ndi ndalama, zamoyo kapena zokhudzana ndi ndalama.