Table of Contents
How do you find the mass of NaOH?
So, its molar mass is 22.989+15.999+1.0079=39.996 g/mol to 5 sig figs….Thus, its molar mass involves:
- MNa=22.989 g/mol.
- MO=15.999 g/mol.
- MH=1.0079 g/mol.
How many moles of Na are in NaOH?
Determining the Molar Mass of a Compound In a compound of NaOH, the molar mass of Na alone is 23 g/mol, the molar mass of O is 16 g/mol, and H is 1 g/mol.
How do you calculate the mass of one atom of sodium?
And whereas one sodium atom has an approximate mass of 23 u, 1 mol of Na atoms has an approximate mass of 23 grams. One mole of a substance has the same mass in grams that one atom or molecule has in atomic mass units….
1 Na molar mass: | 22.99 g |
---|---|
1 Cl molar mass: | 35.45 g |
Total: | 58.44 g |
How do you find the gram equivalent mass of NaOH?
Eq = 98.08 / 2 = 49.04 g/eq. The gram equivalent weight of H2SO4 is 49.04 g/eq. Only half as much sulfuric acid than, for example, HCl, is needed to react something with an acid. The gram equivalent weight of NaOH is 40.00 g/eq.
How do you find the moles of NaOH?
Step 1: Calculate the amount of sodium hydroxide in moles
- Amount of solute in mol = concentration in mol/dm 3 × volume in dm 3
- Amount of sodium hydroxide = 0.100 × 0.0250.
- = 0.00250 mol.
- The balanced equation is: NaOH(aq) + HCl(aq) → NaCl(aq) + H 2O(l)
- So the mole ratio NaOH:HCl is 1:1.
How do you find the number of moles of NaOH in a solution?
500 ml of a solution contains 20 grams of NaOH (mw = 40). Calculate the molarity of the solution. 20 gr of NaOH correspond to 0.5 moles which are contained in 0.5 liter of solution. In one liter of solution there will be (2)(0.5) = 1 mole and thus the solution is 1 M.
How do you calculate the mass of one mole of sodium atom?
In this example, multiply the grams of Na by the conversion factor 1 mol Na/ 22.98 g Na, with 22.98g being the molar mass of one mole of Na, which then allows cancelation of grams, leaving moles of Na.
How do you find equivalent mass?
To calculate the equivalent mass of a base, simply divide the molar mass of the base by the number of hydroxyl groups. Take, for example, calcium hydroxide Ca(OH)₂. A few simple calculations yield an equivalent of 37g/mol. To find the equivalent of an acid, divide the acid’s molar mass by the number of protons.
What is the molar mass of NaOH?
Molar mass of NaOH = 39.99711 g/mol. This compound is also known as Sodium Hydroxide. Convert grams NaOH to moles or moles NaOH to grams. Molecular weight calculation: 22.98977 + 15.9994 + 1.00794.
What is the equivalent weight of NaOH 40/1?
Equivalent weight of a base is basically (pun intended) the molecular mass of the base divided by the n factor (which is basically the amount of hydroxide ions it dissociates in water). So, for NaOH, the molecular mass is: And the equivalent weight will be 40/1 (as it dissociates only one hydroxide ion), which is 40.
How do you calculate the mass of Na2SO4?
mass of Na 2 SO 4 = moles × relative formula mass = 0.25 × 142 = 35.5 g. The example above could also be tackled like this: \\ [mass \\enspace of \\enspace Na_ {2}SO_ {4} = \\frac {20} {2 \imes 40
What is the molar mass of Na2CO3?
The molecular weight would be. Na : 2 x 23.0 = 46. C : 1 x 12.0 = 12. O : 3 x 16 = 48. When we add up the total values i.e, 46 + 12 + 48 = 106. Therefore, the molar mass of Na2CO3 is 106 g/mole.