Which of the statements is not true?

Question

Which of the statements is not true? (A) On passing H2S through acidified K2Cr2O7 solution, a milky colour is observed (B) Na 2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis (C) K2Cr2O7solution in acidic medium is orange (D) K2Cr2O7 solution becomes yellow on increasing the pH beyond 7

Tardigrade Admin · Accepted Answer

Because Na 2 Cr 2 O 7 is hygroscopic

Q. Which of the statements is not true?

On passing $H_{2} S$ through acidified $K_{2} C r_{2} O_{7}$ solution, a milky colour is observed

$N a_{2} C r_{2} O_{7}$ is preferred over $K_{2} C r_{2} O_{7}$ in volumetric analysis

$K_{2} C r_{2} O_{7}$ solution in acidic medium is orange

$K_{2} C r_{2} O_{7}$ solution becomes yellow on increasing the pH beyond 7

Because $N a_{2} C r_{2} O_{7}$ is hygroscopic

Q. Which of the statements is not true?

On passing H2​S through acidified K2​Cr2​O7​ solution, a milky colour is observed

Na2​Cr2​O7​ is preferred over K2​Cr2​O7​ in volumetric analysis

K2​Cr2​O7​solution in acidic medium is orange

K2​Cr2​O7​ solution becomes yellow on increasing the pH beyond 7

Because Na2​Cr2​O7​ is hygroscopic

On passing $H_{2} S$ through acidified $K_{2} C r_{2} O_{7}$ solution, a milky colour is observed

$N a_{2} C r_{2} O_{7}$ is preferred over $K_{2} C r_{2} O_{7}$ in volumetric analysis

$K_{2} C r_{2} O_{7}$ solution in acidic medium is orange

$K_{2} C r_{2} O_{7}$ solution becomes yellow on increasing the pH beyond 7

Because $N a_{2} C r_{2} O_{7}$ is hygroscopic