Equilibrium constants is given in atm for the following reaction 0 o C- Na 2 H PO 4 -12 H 2 Os- Na 2 H PO 4 -7 H 2 Os-5 H 2 Og- K p -2-43- 10 -13The vapour pressure of water at 0 o C is 4-56 torrAt what relative humidities will Na 2 H PO 4 -12 H 2 Os be efflorescent when exposed to air at 0 o C-

Na _ 2 HPOH.12 H _ 2 O( s ) ⇌ Na _ 2 HP O _ 4 .7 H _ 2 O+5 H _ 2 O K _ P =2.43× 10 ^ 13 K _ P =( PH _ 2 O ) #160; ^ 5 ( PH _ 2 O ) #16 ...

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Characteristics of Equilibrium Constant

Equilibrium c...

Question

Equilibrium constants is given (in atm) for the following reaction $0^{o} C$ :
${N a}_{2} H {P O}_{4} .12 H_{2} O (s) ⇌ {N a}_{2} H {P O}_{4} .7 H_{2} O (s) + 5 H_{2} O (g); K_{p} = 2.43 \times 10^{- 13}$
The vapour pressure of water at $0^{o} C$ is $4.56$ torr
At what relative humidities will ${N a}_{2} H {P O}_{4} .12 H_{2} O (s)$ be efflorescent when exposed to air at $0^{o} C$ ?

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0^{\circ} C

N a_{2} H P O_{4} . 12 H_{2} O (s) ⇌ N a_{2} H P O_{4} . 7 H_{2} O (s) + 5 H_{2} O (g); K_{p} = 2.43 \times 10^{- 13}

0^{\circ} C

4.56 t o r r

N a_{2} H P O_{4} .12 H_{2} O (s)

0^{\circ} C

0^{o} C

N a_{2} H P O_{4} .12 H_{2} O ⇌ N a_{2} H P O_{4} .7 H_{2} O (s) + 5 H_{2} O (g)

K_{p} = 31.25 \times 10^{- 23}

0^{o} C

S r C l_{2} . 6 H_{2} O_{(s)} ⇌ S r C l_{2} . 2 H_{2} O_{(s)} + 4 H_{2} O_{(g)},

K_{p} = 6.89 \times 10^{- 12}

0^{o} C

0^{o} C

0^{o} C

{N a}_{2} {H P O}_{4} \cdot {12 H}_{2} O (s) ⇌ {N a}_{2} {H P O}_{4} \cdot {7 H}_{2} O (s) + {5 H}_{2} O (s)

K_{p} = 31.25 \times 10^{- 13}

N a_{2} S O_{4} \cdot 10 H_{2} O

0^{\circ} C

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