Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u).
Enter a valid molecular formula and press the calculate button to determine the correct molar mass. Atomic mass values for individual elements can be obtained from the Periodic Table of the Elements. Results are expressed in terms of grams/mol.
分子式輸入
常用分子式示例
計算結(jié)果
輸入分子式開始計算
This molarity calculator is a tool for converting the mass concentration of any solution to molar concentration (or recalculating grams per ml to moles). You can also calculate the Mass, Volume or Concentration required for a solution:
mass of a compound required to prepare a solution of known volume and concentration,
volume of solution required to dissolve a compound of known mass to a desired concentration,
concentration of a solution resulting from a known mass of compound in a specific volume.
mass of a compound required to prepare a solution of known volume and concentration,
volume of solution required to dissolve a compound of known mass to a desired concentration,
concentration of a solution resulting from a known mass of compound in a specific volume.
參數(shù)輸入
輸入任意兩個值和分子量，自動計算第三個值
計算結(jié)果
輸入?yún)?shù)開始計算
計算公式
n = m / M
C = n / V
∴ C = m / (M × V)
Calculate the dilution required to prepare a stock solution. The dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
稀釋參數(shù)
C?V? = C?V? · 填入三個值計算第四個
起始溶液 (母液)
最終溶液 (工作液)
計算結(jié)果
輸入?yún)?shù)開始計算
連續(xù)稀釋
Buffers are solutions that can preserve their original pH when mixed with an acid or base. The ability of the buffer to maintain its pH is called its buffer capacity.
This buffer calculator provides an easy-to-use tool to calculate buffer molarity and prepare buffer solutions using the formula weight of the reagent and your desired volume (L, mL, or μL) and concentration (M, mM, or nM).
This buffer calculator provides an easy-to-use tool to calculate buffer molarity and prepare buffer solutions using the formula weight of the reagent and your desired volume (L, mL, or μL) and concentration (M, mM, or nM).
選擇緩沖液
ACES
MW: 182.2
pH: 6.1 - 7.5
ADA
MW: 190.15
pH: 6.0 - 7.2
ADA disodium salt
MW: 234.12
pH: 6.0 - 7.2
Ammonium acetate
MW: 77.08
pH: 3.75 - 5.75
AMPSO
MW: 227.28
pH: 8.3 - 9.7
AMPSO sodium salt
MW: 249.26
pH: 8.3 - 9.7
BES
MW: 213.25
pH: 6.4 - 7.8
BES sodium salt
MW: 235.23
pH: 6.4 - 7.8
Bicine
MW: 163.17
pH: 7.6 - 9.0
BIS-TRIS
MW: 209.24
pH: 5.8 - 7.2
BIS-TRIS hydrochloride
MW: 245.7
pH: 5.8 - 7.2
BIS-TRIS propane
MW: 282.33
pH: 6.3 - 9.5
Boric acid
MW: 61.83
pH: 8.24 - 10.24
CABS
MW: 235.34
pH: 10.0 - 11.4
Cacodylic acid
MW: 138
pH: 5.22 - 7.22
Calcium acetate hydrate
MW: 158.17
pH: 3.75 - 5.75
Calcium carbonate
MW: 100.09
pH: 8 - 10
CAPS
MW: 221.32
pH: 9.5 - 11.5
CAPSO
MW: 237.32
pH: 8.9 - 10.3
CAPSO sodium salt
MW: 259.3
pH: 8.9 - 10.3
CHES
MW: 207.29
pH: 8.6 - 10.0
Citric acid
MW: 192.12
pH: 2.2 - 6.5
Citric acid monohydrate
MW: 210.14
pH: 2.2 - 6.6
Citric acid trisodium salt
MW: 258.07
pH: 2.2 - 6.7
DIPSO
MW: 243.28
pH: 7.0 - 8.2
EPPS
MW: 252.33
pH: 7.3 - 8.7
Ethanolamine hydrochloride
MW: 97.54
pH: 8.5 - 10.5
Glycolic acid
MW: 76.05
pH: 2.83 - 4.83
HEPBS
MW: 266.36
pH: 7.6 - 9.0
HEPES
MW: 238.3
pH: 6.8 - 8.2
HEPES hemisodium salt
MW: 249.3
pH: 6.8 - 8.2
HEPES potassium salt
MW: 276.39
pH: 6.8 - 8.2
HEPES sodium salt
MW: 260.29
pH: 6.8 - 8.2
Imidazole
MW: 68.08
pH: 5.99 - 7.99
Imidazole hydrochloride
MW: 104.54
pH: 6.1 - 8.1
Magnesium acetate tetrahydrate
MW: 214.45
pH: 3.54 - 5.54
MES
MW: 195.24
pH: 5.5 - 6.7
MES hemisodium salt
MW: 206.73
pH: 5.5 - 6.7
MES hydrate
MW: 195.24
pH: 5.5 - 6.7
MES monohydrate
MW: 213.25
pH: 5.5 - 6.7
MES potassium salt
MW: 233.33
pH: 5.5 - 6.7
MES sodium salt
MW: 217.22
pH: 5.5 - 6.7
MOBS
MW: 223.29
pH: 6.9 - 8.3
MOPS
MW: 209.26
pH: 6.5 - 7.9
MOPS hemisodium salt
MW: 220.25
pH: 6.5 - 7.9
MOPS sodium salt
MW: 231.25
pH: 6.5 - 7.9
MOPSO
MW: 225.26
pH: 6.2 - 7.6
MOPSO sodium salt
MW: 247.24
pH: 6.2 - 7.6
PIPES
MW: 302.37
pH: 6.1 - 7.5
PIPES dipotassium salt
MW: 378.55
pH: 6.1 - 7.5
配制參數(shù)
請從左側(cè)選擇緩沖液
計算結(jié)果
選擇緩沖液并輸入?yún)?shù)
The pH value is an essential factor in chemistry, medicine, and daily life. With this pH calculator, you can determine the pH of a solution in a few ways. It can convert pH to H+, as well as calculate pH from the ionization constant and concentration.
Our calculator may ask you for the concentration of the solution. If you don't know, you can calculate it using our concentration calculator. You can also use the solution dilution calculator to calculate the concentration of ions in a diluted solution.
pH計算參數(shù)
計算結(jié)果
輸入?yún)?shù)開始計算
pH 標尺參考
0
2
4
6
7
8
10
12
14
酸性
中性
堿性
計算原理
弱酸: Ka = [H?][A?]/[HA]
弱堿: Kb = [OH?][BH?]/[B]
pH = -log??[H?]
pH + pOH = 14 (25°C)