What is the mass of K2Cr2O7 required to produce 254 gm I2 from KI solu – McqOptions

MCQOPTIONS

1.	What is the mass of K₂Cr₂O₇ required to produce 254 gm I₂ from KI solution? Given: K₂Cr₂O₇ + 2KI 2Cr₃₊ + I₂
A.	49 g
B.	98 g
C.	9.8 g
D.	4.9 g
Answer» C. 9.8 g

Discussion

No Comment Found

Related MCQs

What is the volume strength of H<sub>2</sub>O<sub>2</sub> of its 11.2 ml requires 30 ml of 0.5 M <sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>?
How many moles of KMnO<sub>4</sub> are required for complete oxidation of 1.25 mol Cu<sub>2</sub>S?<br><strong>Cu<sub>2</sub>S Cu<sup>+2</sup> + SO<sub>2</sub></strong>
What is the volume of 0.05 M KMnO<sub>4</sub> which will react with 50 ml of 0.1 M H<sub>2</sub>S in acidic medium (H<sub>2</sub>S S0<sub>2</sub>)?
What is the mass of K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> required to produce 254 gm I<sub>2</sub> from KI solution? Given: K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> + 2KI 2Cr<sub>3+</sub> + I<sub>2</sub>
How many number of moles of KMnO<sub>4</sub> will react with 180 gm H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> according to given reaction?<br><strong>KMnO<sub>4</sub> + H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> 2C0<sub>2</sub> + Mn<sup>2+</sup></strong>
KMnO<sub>4</sub> reacts with oxalic acid according to the equation given below. Here 20 mL of 0.1 M KMnO<sub>4</sub> is equivalent to how many mL and molarity of H<sub>2</sub>C<sub>2</sub>O<sub>4</sub>?<br><strong> 2MnO<sub>4</sub><sup> </sup> + 5C2O<sub>4</sub><sup> </sup> + 16H<sup>+</sup> 2Mn<sup>+1</sup> + 10CO<sub>2</sub> + 8H<sub>2</sub>O</strong>