The percentage of phosphorus in the fertilizer superhosphate $C a (H_{2} P O_{4})_{2}$ is :
[ $H = 1; O = 16; P = 31; C a = 40$ ]

53 %

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13.5 %

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37.42 %

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26.5 %

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Solution

The correct option is D $26.5 %$
$C a (H_{2} P O_{4})_{2}$ , molar mass $= 234 g m$
% of $P$ $= 62 \times \frac{100}{234} = 26.5 %$

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Similar questions

Calculate the percentage of phosphorus in the fertilizer, superphosphate $C a (H_{2} P O_{4})_{2}$ . [H = 1, O = 16, P = 31, C = 40]

Calculate the percentage of phosphorus in the fertilizer superphosphate, Ca(H₂PO₄)₂ (correct to 1 decimal place.) [Ca = 40, H = 1, P = 31, O = 16]

Calculate the percentage of phosphorus in the fertilizer, superphosphate $C a (H_{2} P O_{4})_{2}$ .(Correct to 1 decimal point). [H = 1, O = 16, P = 31, C = 40]

(i) Calculate the percentage of phosphorus in the fertilizer superphosphate Ca(H₂PO₄)₂.
(H = 1; O = 16; P = 31; Ca = 40)
(ii) Write out and balance the following equation correctly:
Ca₃(PO₄)₂ + H₂SO₄ $\overset{}{\to}$ Ca(H₂PO₄)₂ + CaSO₄
(iii) Copy and complete the following sentence:
Superphosphate is an example of a compound called___________(acid salt / basic salt / normal salt).

Find the percentage of
(a) oxygen in magnesium nitrate crystals $[M g (N O_{3})_{2} 6 H_{2} O]$ .
(b) boron in $N a_{2} B_{4} O_{7} . 10 H_{2} O . [H = 1, B = 11, O = 16, N a = 23] .$
(c) phosphorus in the fertilizer superphosphate $C a (H_{2} P O_{4})_{2}$

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The percentage of phosphorus in the fertilizer superhosphate Ca(H2PO4)2 is : [H=1; O=16; P=31; Ca=40]

The correct option is D 26.5%Ca(H2PO4)2, molar mass =234 gm% of P =62×100234=26.5%

The percentage of phosphorus in the fertilizer superhosphate $C a (H_{2} P O_{4})_{2}$ is :
[ $H = 1; O = 16; P = 31; C a = 40$ ]

The correct option is D $26.5 %$
$C a (H_{2} P O_{4})_{2}$ , molar mass $= 234 g m$
% of $P$ $= 62 \times \frac{100}{234} = 26.5 %$