Chemistry

With the combination of two different halogens, the interhalogen compounds are formed. When compared with pure diatomic halogen molecules, they are more reactive because the bond between different halogens are more polar and weaker. During reactions, it makes them more susceptible to bond cleavage.

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The activation energy for fuel combustion reactions is very large, and because every substance or element requires an ignition temperature to function and excite to a higher temperature, oxygen in air does not combust to fire.

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Ans: The reactions taking place in the Daniel cell is as follows;

Zn⁺ + Cu²⁺ → Zn²⁺ + Cu

The number of electrons involved in two. The Nernst equation is as follows;

E_{cell =} E $°$ _cell - $\frac{-0.059}{2}$  log $\frac{\left[Z{n^2}^{+}\right]}{\left[C{u^2}^{+}\right]}$

From the above equation, we conclude that increasing the concentration of Zn^2+, E_cell will decrease.

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Ans: The given cell reaction consists of two half cell reactions represented below as follows;

At anode: Cu→Cu²⁺+ 2e⁻

At cathode: Cl² + 2e⁻ →2Cl⁻

Here oxidation of copper and reduction of chlorine is taking place

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The energy possessed by the reacting species increases as the temperature rises, the pace of a reaction increases. This raises the temperature and raises the average kinetic energy of the reactant molecules

Due to their high electronegativity, small atomic size, greater ability to form multiple bonds, and absence of d-orbitals, the first elements of each group behave differently.

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Ans: Standard hydrogen electrode (SHE) is used as a reference electrode and its electrode potential is assumed to be zero. The electrode potential of other electrodes is measured concerning standard hydrogen electrodes.

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The reaction's activation energy is relatively high at room temperature and not readily available, the reaction is highly viable. H₂ (g) and O₂ (g)bond break and clash, allowing particles to pass across the energy barrier.

2H₂ + O₂→2H₂O

Because of the large activation energy, the water molecule does not form in this equation.

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Ans: Conductivity due to the total number of ions present in the solution is termed as specific conductivity. An increase in the number of ions per unit volume increases. In addition to water, the number of ions per unit volume decreases therefore conductivity decreases.

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A. The reaction has a zero order. The concentration of the reactants does not change with time in a zero order reaction, and the rate of concentration remains constant

B. Slope of the curve is  - k

C. The rate constant's units are molL  ¹s ^{- 1}