The specific heat capacity of a metal is 0.158 cal / K -gm. If the oxide of metal contains 7 500 % metal, by mass, the correct information(s) about the metal is/are -

A) S = m .Δ T q and A ≈ S 6.4 . As q A > q B , S A > S B and A A < A B . B) Approximate atomic mass = 0.158 6.4 = 40.5 Let the metal oxide is M₂Oᵥ. ( 2 × 40.5 + 16 V ) × 700 500 = 2 × 40.5 V = 2.025 ≈ 2 . Again, ( 2 A + 16 × 2 ) × 700 500 = 2 A ⟹ A = 40 .

Chemistry - Thermodynamics - 1 Question with Solution | TestHub

ChemistryThermodynamics - 1Heat & Heat CapacityMedium2 minQB

ChemistryMediummultiple choice

The specific heat capacity of a metal is $0.158 cal / K$ -gm. If the oxide of metal contains $\frac{500}{7} %$ metal, by mass, the correct information(s) about the metal is/are -

Options:(select one or more)

Answer:

A, B, C

Solution:

A) $S = \frac{q}{m .Δ T}$ and $A \approx \frac{6.4}{S}$ .

As $q_{A} > q_{B}$ , $S_{A} > S_{B}$ and $A_{A} < A_{B}$ .

B) Approximate atomic mass = $\frac{6.4}{0.158} = 40.5$

Let the metal oxide is M₂Oᵥ.

$(2 \times 40.5 + 16 V) \times \frac{500}{700} = 2 \times 40.5$

$V = 2.025 \approx 2$ .

Again,

$(2 A + 16 \times 2) \times \frac{500}{700} = 2 A$

⟹ $A = 40$ .

Stream:JEESubject:ChemistryTopic:Thermodynamics - 1Subtopic:Heat & Heat Capacity

⏱ 2mℹ️ Source: QB

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