A binary salt(A) on reaction with H2O gives B(aq) and C(g). (C) gas on passing into ammonia-cal AgNO3 gives white ppt D(aq). CO2 gas turns B(aq) milky. Identify (A),(B),(C) and (D).
Then the compound B is_________.
A
C2Ag2
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B
Ca(OH)2
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C
CaC2(Ca2+,C2−2binary)
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D
C2H2
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Solution
The correct option is BCa(OH)2 Option (B) is correct. CaC2[A]+H2O⟶Ca(OH)2[B]+CO2[C] AgNO3+CO2⟶Ag2CO3[D]+NO3 Ca(OH)2[B]+CO2⟶CaCO3+H2O