Calculate the molecular mass (u) of Phosphoric Acid ( $H_{3} {P O}_{4}$ ).
$[H = 1, P = 31, O = 16]$

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Solution

The correct option is C 98
Molecular mass (u) of Phosphoric Acid ( $H_{3} {P O}_{4}$ ) $= 3 \times m a s s o f H a t o m s + m a s s o f p h o s p h o r o u s a t o m + 4 \times m a s s o f o x y g e n a t o m$
$= 3 + 31 + 64 = 98 u$

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Similar questions

Q. Calculate the molecular mass of nitric acid, HNO₃. (Atomic masses : H = 1 u ; N = 14 u ; O = 16 u)

Q. First ionization of phosphoric acid is:

H_{3} {P O}_{4} ⇌ H_{3} {P O}_{4}^{-} + H^{+}

p K_{a_{1}} = 2.21

The dissociation constant of conjugate base of

H_{3} {P O}_{4}

will be:

Q. Phosphoric acid is widely used in carbonated beverages, detergents, toothpaste and fertilizers. The mass percentages of

H, P

and

O

in phosphoric acid are

H - 3.06 P - 31.63 %, O - 65.31 %

. The atomic masses

H = 1, P = 31

and

O = 16

Phosphoric
acid is widely used in carbonated beverages , detergents , toothpastes and
fertilizers . Calculate the mass percentage of H , P AND O in phosphoric acid
if atomis mases are H =1 , P=31 and O = 16

Q. What should be the equivalent weight of phosphorous acid, if P=31; O=16; H=1

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Calculate the molecular mass (u) of Phosphoric Acid (H3PO4).[H=1,P=31,O=16]

The correct option is C 98Molecular mass (u) of Phosphoric Acid (H3PO4) =3×mass of H atoms+mass of phosphorous atom+4×mass of oxygen atom=3+31+64=98u

Calculate the molecular mass (u) of Phosphoric Acid ( $H_{3} {P O}_{4}$ ).
$[H = 1, P = 31, O = 16]$

The correct option is C 98
Molecular mass (u) of Phosphoric Acid ( $H_{3} {P O}_{4}$ ) $= 3 \times m a s s o f H a t o m s + m a s s o f p h o s p h o r o u s a t o m + 4 \times m a s s o f o x y g e n a t o m$
$= 3 + 31 + 64 = 98 u$