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Ionic equilibrium: Weak and strong electrolytes, ionization of electrolytes Previous Year Questions for JEE

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Part of Equilibrium in JEE Main Chemistry.

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Q1ChemistryUnit 6: Equilibrium
In a mixture of acetic acid and sodium acetate, the ratio of concentrations of the salt to the acid is increased ten times. Then the pHp H of the solution:
Q2ChemistryUnit 6: Equilibrium
Which of the following are used as an antacid to reduce acidity in stomach?
Q3ChemistryUnit 6: Equilibrium
If 50mL50 m L of 0.2MKOH0.2 M K O H is added to 40mL40 m L of 0.5MHCOOH.0.5 M H C O O H . The pHp H of the resulting solution is: (Ka=1.8×10−4)\left(\boldsymbol{K}_{\boldsymbol{a}}=\mathbf{1 . 8} \times \mathbf{1 0}^{-\mathbf{4}}\right)
Q4ChemistryUnit 6: Equilibrium
If the molar concentration of PbI2\boldsymbol{P b I}_{2} is 1.5×10−31.5 \times 10^{-3} mol L−1,L^{-1}, then the concentration of iodide ions of gg ion L−1L^{-1} is ?
Q5ChemistryUnit 6: Equilibrium
Which has the highest pH?p H ?
Q6ChemistryUnit 6: Equilibrium
Zn(OH)2Z n(O H)_{2} is an amphoteric hydroxide which is involved in the following two equilibria existing simultaneously in aqueous solution. Zn(OH)2(s)⇌Zn2+(aq)+\boldsymbol{Z n}(\boldsymbol{O} \boldsymbol{H})_{2}(\boldsymbol{s}) \rightleftharpoons \boldsymbol{Z} \boldsymbol{n}^{2+}(\boldsymbol{a} \boldsymbol{q})+ 2OH−(aq);Ksp=1.2×10−17\mathbf{2 O H}^{-}(\boldsymbol{a q}) ; \boldsymbol{K}_{s p}=\mathbf{1 . 2} \times \mathbf{1 0}^{-\mathbf{1 7}} Zn⁡(OH)2(s)+2OH−(aq)⇌\operatorname{Zn}(O H)_{2}(s)+2 O H^{-}(a q) \rightleftharpoons [Zn(OH)4]2−(aq);Kc=0.12\left[Z n(O H)_{4}\right]^{2-}(a q) ; K_{c}=0.12 At what pHp H the solubility of Zn(OH)2Z n(O H)_{2} will be minimum?
Q7ChemistryUnit 6: Equilibrium
Which of the following is an example of weak electrolyte?
Q8ChemistryUnit 6: Equilibrium
Assertion Hussain died turning blue in the body colour. Reason This is due to deficiency of oxygen.

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