Some reactions of two ores, A1 and A2 of the metal M are given below.(see attachement)Identify A1, A2, M, C, D, and G, and explain using the required chemical reactions.

Hello Student, Please find the answer to your question Calcinations of the ore A1 to form CO2 indicates that A1 should be a carbonate. Further, reaction of A1 with HCI and KI to evolve I2 indicates that A1 would also be hydroxide. So the possible formula for the ore, should be CuCO3.Cu(OH)2 which explains all the given reactions CuCO3.Cu(OH)2 2CuO ↓ +CO2 + H2O (A1) (C) black CuCO3.Cu(OH)2 + 4HCI → 2CuCI2 + CO2 + 3H2O (A1) 2CuCI2 + 4KI → Cu2 ↓ + 4KCI + I2 (D) Roasting of A2 gives gas G whose nature is identified as SO2 as it gives green colour with acidified K2Cr2O7. So A2 should be sulphide of copper. 2Cu2S + 3O2 2Cu2O + 2SO2 (A2) (G) Cu2S + 2Cu2O 6Cu+SO2 (M) 3SO2 + K2Cr2O7 + H2SO4 → K2SO4 + Cr2(SO4)3 + 4H2O (G) (Green colour) ThanksjitenderaskIITians Faculty

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Grade 10Inorganic Chemistry

Some reactions of two ores, A₁ and A₂ of the metal M are given below.
(see attachement)
Identify A₁, A₂, M, C, D, and G, and explain using the required chemical reactions.

Question image for Some reactions of two ores, A 1 and A 2 of the met

Hrishant Goswami

12 Years agoGrade 10

1 Answer

Jitender Pal

12 Years ago

Hello Student,

Please find the answer to your question

Calcinations of the ore A₁ to form CO₂ indicates that A₁ should be a carbonate. Further, reaction of A₁ with HCI and KI to evolve I₂ indicates that A₁ would also be hydroxide. So the possible formula for the ore, should be CuCO₃.Cu(OH)₂ which explains all the given reactions