Download App

Electrochemistry — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry2 Marks
Question
Why is anode in a galvanic cell considered to be negative?
✓

Answer

  1. According to IUPAC conventions, the electrode of a galvanic cell where de-electronation or oxidation takes place releasing electrons is called anode. $Zn _{( s )} \rightarrow Zn _{( aq )}^{2+}+2 e ^{-}$
  2. The electrons released due to oxidation reaction are accumulated on the metal electrode surface charging it negatively.
Hence anode in the galvanic cell is considered to be negative.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the following in one or two sentence." from Electrochemistry→Electrochemistry — all question types→Chemistry STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

How many moles of electrons are required for reduction of 2 moles of $Zn ^{2+}$ to Zn ?
→
Derive relationship between $\Delta H$ and $\Delta U$ for gaseous reaction.
→
The molar conductivity of $0.1 M CH _3 COOH$ at $25^{\circ} C$ is $15.9 \Omega^{-1} cm ^2 mol ^{-1}$. If the molar conductivities of $CH 3 COO ^{-}$and $H ^{+}$ions in $\Omega^{-1} cm ^2 mol ^{-1}$ at zero concentration are 40.8 and 349.6 respectively, calculate degree of dissociation of $0.1 M CH _3 COOH$.
→
What will be the names of the following compounds: ICl, BrF?
→
With the help of the equation, $\Delta G^0=-n F E_{\text {cell }}^0$ explain that cell potential is an intensive property.
→
Define hydrolysis.
→
Write the value of $\frac{2.303 RT }{ F }$ in Nernst equation.
→
How is chlorine obtained from rock salt or NaCl?
→
Identify isomorphous and polymorphous substances in the following:
$K _2 SO _4$, graphite, $\beta$-quartz, $Na _2 SeO _4, CaCO _3$, diamond, cristobalite, $C _5 NO _3$.
→
Derive an expression for maximum work in isothermal reversible expansion of two moles of an ideal gas.
→