Which compound, when dissolved in water, conducts electricity and forms a basic solution?
NaOH
NaOH
When ionic compounds like NaOH dissolve in water, their crystal lattice breaks apart, and the pre-existing ions ( \(\text{Na}^+\) and \(\text{OH}^-\) ) separate and become surrounded by water molecules (hydration). This process is called dissociation :
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Zinc is used to protect the iron from corrosion because zinc is
Which one of the following represents the correct order of electron releasing tendency of metals?
Which one of the following is the correct arrangement of metals in the decreasing order of their reactivity?
Important Questions from Electrochemistry
- At $298 \, K$, given the standard electrode potentials: $E^\circ_{Cu^{2+}/Cu} = 0.34 \, V$, $E^\circ_{Zn^{2+}/Zn} = -0.76 \, V$, $E^\circ_{Fe^{2+}/Fe} = -0.44 \, V$, and $E^\circ_{Ag^{+}/Ag} = 0.80 \, V$.
Based on these values, which of the following reactions is NOT expected to occur spontaneously under standard conditions? - Which of the following processes is required for extracting metal from cinnabar ore?
You are given three metals 'X', 'Y' and 'Z'. Metal 'X' is found to react with an aqueous solution of both YSO 4and ZSO 4whereas metal 'Z' is found to react only with aqueous solution of YSO 4. Based on these observations, select the correct statement from the following.
The mobility of a divalent cation in water is 8 × 10-8 m2 V-1 s-1. The effective radius of the ion is (viscosity of water = 1 cP : c = 1.6 × 10-19 C)
The electrical double layer model among the following that consists of both fixed and diffuse layers is
