Àwọn Ìṣàmúlò-ètò

Ṣàfikún fún molarítì, àwọn ìṣàmúlò-ètò, àwọn ìṣàmúlò-ètò molarítì tàbí àwọn ìwọ̀n àwọn ìṣàmúlò-ètò.

Àwọn àwọn ààyè-iṣẹ́

Àwọn Ìjánu-ìsún ?

g/mol

gẹgẹbi NaCl ≈ 58.44 g/mol.

Àwọn ìwọ̀n

Àwọn ìpéwọ̀n

Àwọn Ìṣàmúlò-ètò

mol/L

Mólárití (mol/L) —

Àwọn àgbègbè àwọn àgbègbè —

Àwọn ààyè-iṣẹ́ —

Ìgúnrégé —

Àwọn Àtòjọ-ẹ̀yàn àwọn ìṣàmúlò-ètò

Ńlà àwọn àwọn ààtò àtòjọ-ẹ̀yàn yìí?

Àkóónú ìṣàmúlò-ètò yìí

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.

Àwọn Àtòjọ-ẹ̀yàn

Kini molarítì?

Molarity (M) is moles of solute per litre of solution. Dissolving 58.44 g of NaCl (1 mole) in 1 litre gives a 1 M solution.

Bawo ni mo ṣe lè gba àwọn mólètì láti inú àwọn ìtàn?

Divide the mass in grams by the molar mass in g/mol. 117 g of NaCl is 117 / 58.44 = 2 moles.

Ìgbà wò nínú àwọn solute mìíràn ní mò fẹ́ fún àwọn ààyè-iṣẹ́ molarítì àti ìwọ̀n?

Àwọn Mólè tí a fẹ́ = mólarity × ìwọ̀n nínú lítàrà, láti jẹ́ pé ayọ̀ = mólè × ayọ̀ mólàrà. Fún 250 mL ti 0.1 M NaCl tí jẹ́ 0.1 × 0.25 = 0.025 mol, nípa 1.46 g. Àtòjọ "sólúsò fun" sí ayọ̀ láti jẹ́ pé kalkulator̀ náà lágbára iṣẹ́ náà.

Àwọn àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò àwọn ààtò

Nínú lítà kan tí a tí ìjádè tí a tí ìparí. Ṣàdà solute, láti sé àwọn àwọn ìjádè láti inú àwọn àmì-ìwé láti gba àwọn àwọn ààyè tí a fẹ́ - kò fi pamọ́ sí àwọn ààyè àwọn ààyè tí a tí ìjádè sí inú àwọn ààyè tí a tí ìjádé sí inú àwọn ààyè tí a tì fi pamọ́ sí.

Kini iyatọ laarin molari ati molari?

Móláritì ní mólè fún lítà kan tí a bá fi pamọ́ láti inú ìṣàmúlò-ètò náà, àti àwọn ìṣàmúlò-ètò tí a bá fi pamọ́ láti inú àwọn ìṣàmúlò-ètò náà. Móláritì ní mólè fún kilógiramu kan tí a bá fi pamọ́ láti inú ìṣàmúlò-ètò náà, àti àwọn ìṣàmúlò-ètò tí a bá fi pamọ́ láti inú ìṣàmúlò-ètò náà. Àtòjọ-ẹ̀yàn yìí ń tọ́ka móláritì.

Bawo ni mo ṣe lè fi àwọn ààyè-iṣẹ́ pamọ́?

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 — ló àwọn ìṣàmúlò-ètò yìí láti inú ìṣàmúlò-ètò

Fi àwọn ìṣàmúlò-ètò yìí kọ̀ǹpútà yìí láti jẹ́ ààyè-iṣẹ́ JSON tí a tí fi pamọ́ - kò ní bọ́tìnì kan tí a fẹ́. Fi àwọn fálù ààyè-iṣẹ́ sílẹ̀ sí bí àwọn àwọn ìṣàmúlò-ètò àti JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Ka àwọn àkọlé API kíkún →

Àwọn Ààyè Ìjánu-ìṣàmúlò-ètò

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.

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