NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- Redox Reactions
NTA Abhyas 2020 · Chemistry · Redox Reactions
25mL of household bleach solution was mixed with 30mL of 0.50MKI...
of household bleach solution was mixed with of and of acetic acid. In the titration of the liberated iodine, of was used to reach the end point. The molarity of the household bleach solution is
Options
- A0.24 M
- B0.48
- C0.024 M
- D0.96 M
Correct answer
A. 0.24 M
Step-by-step solution
\mathop{{H}_{2}{O}_{2}}_{\mathop{\text{Bleach}_{\text{25 ml}}} + \mathop{\text{2}{\textI^{-}}_{\mathop{0. \text{5M}_{30\text{ml}}} + \mathop{\text{2}{\textH^{+}}_{\mathop{( \text{from C}{\text{H}_{3}\text{COOH} )}_{\text{4 N} ( 10\text{ml} )}} \to {I}_{2} + \text{2}{\text{H}_{2}O...(i)
{I}_{2} + \mathop{\text{2N}{\text{a}_{2}{S}_{2}{O}_{3}}_{0. \text{25 N} ( \text{48 ml} )} \to \text{N}{\text{a}_{2}{S}_{4}{O}_{6} + \text{2NaI}...(ii)
m. mol of (m. Moles of \text{N}{\text{a}_{2}{S}_{2}{O}_{3} )
Using equation (i)
1 m. Mol of m. Mol of
m.mol of m.mol
Molarity of
{I}_{2} + \mathop{\text{2N}{\text{a}_{2}{S}_{2}{O}_{3}}_{0. \text{25 N} ( \text{48 ml} )} \to \text{N}{\text{a}_{2}{S}_{4}{O}_{6} + \text{2NaI}...(ii)
m. mol of (m. Moles of \text{N}{\text{a}_{2}{S}_{2}{O}_{3} )
Using equation (i)
1 m. Mol of m. Mol of
m.mol of m.mol
Molarity of