How do you find the molarity of NaOH from titration with KHP?
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Molarity of NaOH = (mol KHP)/ (V NaOH used for titration): M(NaOH)=0,00213mol0,03103L=0,0688molL . Since NaOH is monovalent its molarity is equal to its Normality =0,0688 (eq)/L.
How do you find the molarity of NaOH in a titration?
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 calculate molarity from titration?
Use the titration formula. If the titrant and analyte have a 1:1 mole ratio, the formula is molarity (M) of the acid x volume (V) of the acid = molarity (M) of the base x volume (V) of the base. (Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution.)
How do you find the molarity of KHP?
Moles of KHP=0.6939⋅g204.22⋅g⋅mol−1=3.398×10−3⋅mol.
What is the molarity of this potassium hydrogen phthalate solution?
Answer: the molarity of the potassium hydrogen phthalate solution is 0.1028 mol/L.
What is the molar mass of KHP?
204.22 g/molPotassium hydrogen phthalate / Molar mass
KHP (MWT = 204.22 g/mol) is a monobasic acid that contains one mole of neutralizable hydrogen per mole of compound.
What is the formula used to calculate molarity?
As mass / volume = molarity * molar mass , then mass / (volume * molar mass) = molarity . Substitute the known values to calculate the molarity: molarity = 5 / (1.2 * 36.46) = 0.114 mol/l = 0.114 M . You can also use this molarity calculator to find the mass concentration or molar mass.
What is the molarity of potassium hydrogen phthalate?
The molarity of potassium hydrogen phthalate solution is 0.1 M. The volume of potassium hydrogen phthalate solution is 250 mL.
What is the exact concentration molarity of the NaOH solution?
0.1103 M
The instructions for preparing the NaOH solution were supposed to lead to a solution that was approximately 0.1 M. Our precise molarity of 0.1103 M is consistent with this.
How do you use KHP to standardize NaOH?
% Uncertainty of KHP Mass = (0.01/m KHP) x 100
Why is KHP used to standardize NaOH?
Why do you need to use Khp to standardize a solution of NaOH? Solid NaOH is highly hygroscopic (it absorbs water from the air) and thus it cannot be accurately weighed. A KHP sample of known mass (and, therefore, known moles) can be titrated with the NaOH solution to determine very precisely the concentration of the NaOH.
Why do we use NaOH in titration?
Why do we use NaOH in titration? It is a strong alkaline reagent and produces a sharp change in pH which makes titration easier to do. Is NaOH an acid or base? NaOH is a base because when dissolved in water it dissociates into Na+ and OH- ions. It is the OH- (hydroxyl ion) which makes NaOH a base.
How much of NaOH were used in the titration?
Precisely weigh out approximately 1.000 g potassium acid phthalate (KHP). About 10 mL of NaOH should be used in the titrations. The NaOH solution’s concentration is about 0.5 M. The molar mass of KHP is 204.23 g/mol, and it has one acidic hydrogen per molecule.