Advertisements
Advertisements
Question
Balance the following equation by the ion electron method.
\[\ce{Na2S2O3 + I2 -> Na2S4O6 + NaI}\]
Advertisements
Solution
\[\ce{S2O^2-_3 -> S4O^2-_6}\] .........(1)
half reaction \[\ce{I2 -> I^-}\] .......(2)
\[\ce{2S2O^2-_3 -> S4O^2-_6 + 2e^-}\] ..........(3)
\[\ce{I2 + 2e^- -> 2I^-}\] ......(4)
Add Equation (3) + (4) we get,
\[\ce{2S2O^2-_3 + I2 -> S4O^2-_6 + 2I^-}\]
APPEARS IN
RELATED QUESTIONS
1 g of an impure sample of magnesium carbonate (containing no thermally decomposable impurities) on complete thermal decomposition gave 0.44 g of carbon dioxide gas. The percentage of impurity in the sample is
When 6.3 g of sodium bicarbonate is added to 30 g of acetic acid solution, the residual solution is found to weigh 33 g. The number of moles of carbon dioxide released in the reaction is
Total number of electrons present in 1.7 g of ammonia is
Hydrogen peroxide is an oxidising agent. It oxidises ferrous ion to ferric ion and reduced itself to water. Write a balanced equation.
Balance the following equation by the oxidation number method.
\[\ce{K2Cr2O7 + Kl + H2SO4 -> K2SO4 + Cr2(SO4)3 + I2 + H2O}\]
Balance the following equation by the oxidation number method.
\[\ce{KMnO4 + Na2SO3 -> MnO2 + Na2SO4 + KOH}\]
Balance the following equation by the oxidation number method.
\[\ce{Cu + HNO3 -> Cu(NO3)2 + NO2 + H2O}\]
Balance the following equation by the oxidation number method.
\[\ce{KMnO4 + H2C2O4 + H2SO4 -> K2SO4 + MnSO4 + CO2 + H2O}\]
Reducing agent is a species that ____________.
Which one of the following CANNOT act as a reducing agent?
