Q1
The relation between $K_p$ and $K_c$ is given by:
📝 Solution$K_p = K_c(RT)^{\Delta n}$, where $\Delta n$ is the difference in moles of gaseous products and reactants.
Q2
According to the Arrhenius concept, an acid is a substance that:
📝 SolutionThe Arrhenius concept defines an acid as a substance that dissociates in water to give $H^+$ (or $H_3O^+$) ions.
Q3
According to the Bronsted-Lowry concept, a base is a substance that:
📝 SolutionIn the Bronsted-Lowry concept, a base is a proton ($H^+$) acceptor, while an acid is a proton donor.
Q4
The pH of a neutral aqueous solution at 25°C is:
📝 SolutionAt 25°C, pure water has $[H^+] = 10^{-7}$ mol/L, giving pH = 7, which is neutral.
Q5
A buffer solution resists change in pH upon addition of small amounts of:
📝 SolutionA buffer solution (a mix of a weak acid/base and its salt) maintains nearly constant pH when small amounts of acid or base are added.
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Class 11 · Chemistry
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