Identify (P),(Q) and (R). (P)KOH−−−→(Q)+(R)Zn+KOH−−−−−−→(Q)gas(gasturnsredlitmusred) (P)Δ−→ Gas (does not support combustion)
A
P=(NH4)2SO4, Q=NH3, R=K2SO4
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B
P=(NH4)2NO3, Q=NH3, R=KNO3
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C
P=(NH4)2NO2, Q=NH3, R=KNO2
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D
P=(NH4)2Cr2O7, Q=NH3, R=Cr2O3
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Solution
The correct option is CP=(NH4)2NO2, Q=NH3, R=KNO2 P=(NH4)2NO2, Q=NH3, R=KNO2
Reactions are as follows: (NH4)2NO2(P)KOH−−−→NH3(Q)+KNO2(R)Zn+KOH−−−−−−→NH3(Q)gas(gasturnsredlitmusred) (NH4)2NO2(P)Δ−→ Gas (does not support combustion)