Answer:
The molar mass of the diprotic acid is 90.10 g/mol.
Explanation:
The acid is 25.0 mL of this solution required 11.1 mL of 1.00 KOH for neutralization.
To calculate the concentration of acid, we use the equation given by neutralization reaction:
( neutralization )
where,
are the n-factor, molarity and volume of diprotic acid
are the n-factor, molarity and volume of base which is KOH.
We are given:
Putting values in above equation, we get:
Molarity of acid solution = 0.222 M =0.222 mol/L
Volume of original solution = 250 mL = 0.250 L ( 1 mL = 0.001 L)
Moles of diprotic acid in 0.250 L solution :
Mass of diprotic acid = m = 5.00 g
The molar mass of the diprotic acid is 90.10 g/mol.
Answer:
Tetrahedral. Tetra- signifies four, and -hedral relates to a face of a solid; “tetrahedral” literally means “having four faces. ” This shape is found when there are four bonds all on one central atom, with no lone electron pairs. In accordance with the VSEPR theory, the bond angles between the electron bonds are 109.5o ...
Answer is: b) Na₂SO₄.
Oxidation number of sodium cation is +1 (2·(+1) = +2).
Oxidation number of sulfate anion is -2.
Compounds<span> must be electrically </span><span>neutral.</span>
Sodium sulfate is inorganic compound (salt). Sodium sulfate is white solid substance and highly soluble in water.
They are each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
P1V1=P2V2
SO
2X0.140=P2X4.50
P2=2X0.140/4.50
P2=0.0622 atm
