BITSAT 2024 | Electrochemistry Question 2 | Chemistry

Calculate the molarity of a solution containing 5 g of NaOH dissolved in the product of $ \mathrm{H}_{2}-\mathrm{O}_{2} $ fuel cell operated at 1 A current for 595.1 hours. (Assume $ \mathrm{F}=96500 \mathrm{C} / \mathrm{mol} $ of electron and molecular weight of NaOH as $ 40 \mathrm{~g} \mathrm{~mol}^{-1} $ ).

0.625 M

0.05 M

0.1 M

6.25 M

BITSAT 2023

MCQ (Single Correct Answer)

-1

The equilibrium constant of the reaction

$$A(s)+2 B^{+}(a q) \rightleftharpoons A^{2+}(a q)+2 B(s)$$

$$E_{\text {cell }}^{\circ}=0.0295 \mathrm{~V} \text { is } \quad\left[\frac{2.303 R T}{F}=0.059\right]$$

$$2\times10^1$$

$$3\times10^1$$

$$2\times10^5$$

BITSAT 2022

MCQ (Single Correct Answer)

-1

Using the standard electrode potential, find out the pair between which redox reaction is not feasible.

E$$^\Theta $$ values Fe³⁺ / Fe²⁺ = + 0.77; I₂ / I^$$-$$ = + 0.54 Cu²⁺ / Cu = + 0.34; Ag⁺ / Ag = 0.80 V

Fe³⁺ and I^$$-$$

Ag⁺ and Cu

Fe³⁺ and Cu

Ag and Fe³⁺

BITSAT 2021

MCQ (Single Correct Answer)

-1

The molar conductivities of KCl, NaCl and KNO₃ are 152, 128 and 111 S cm² mol^$$-$$1 respectively. What is the molar conductivity of NaNO₃?

101 S cm² mol^$$-$$1

87 S cm² mol^$$-$$1

$$-$$ 101 S cm² mol^$$-$$1

$$-$$ 391 S cm² mol^$$-$$1

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