Consider the following reactions:K_2Cr_2O_7 + | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The reactions are as follows:$1$. $K_2Cr_2O_7 + 4NaCl + 6H_2SO_4 \rightarrow 2CrO_2Cl_2 + 2KHSO_4 + 2NaHSO_4 + 3H_2O$ (Chromyl chloride test).$2$.

Vedclass · Accepted Answer

$6$

Vedclass · Answer

(A) The reactions are as follows:$1$. $K_2Cr_2O_7 + 4NaCl + 6H_2SO_4 \rightarrow 2CrO_2Cl_2 + 2KHSO_4 + 2NaHSO_4 + 3H_2O$ (Chromyl chloride test).$2$. $CrO_2Cl_2 + 4NaOH \rightarrow Na_2CrO_4 + 2NaCl + 2H_2O$ (Compound $B$ is $Na_2CrO_4$).$3$. $2Na_2CrO_4 + 2H^+ \rightarrow Na_2Cr_2O_7 + 2Na^+ + H_2O$ (Compound $C$ is $Na_2Cr_2O_7$).In the dichromate ion $(Cr_2O_7^{2-})$,there are two $Cr$ atoms linked by an oxygen bridge $(Cr-O-Cr)$.Each $Cr$ atom is bonded to three terminal oxygen atoms (two double-bonded and one single-bonded with a negative charge).Total terminal oxygen atoms = $3 + 3 = 6$.

Consider the following reactions:
$K_2Cr_2O_7 + NaCl + H_2SO_4 \rightarrow CrO_2Cl_2 + \text{Side Products}$
$CrO_2Cl_{2(Vapour)} + NaOH \rightarrow B + NaCl + H_2O$
$B + H^+ \rightarrow C + H_2O$
The number of terminal $'O'$ atoms present in the compound $'C'$ is $..........$

Similar Questions

Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with $(i)$ iron $(II)$ ions,$(ii)$ $SO_2$,and $(iii)$ oxalic acid? Write the ionic equations for the reactions.

Which of the following ions is green in colour?

For $Cu_{2}Cl_{2}$ and $CuCl_{2}$ in aqueous medium,which of the following statements is correct?

Identify the wrong statement regarding copper$(II)$ sulphate $(CuSO_4)$.

$FeSO_4 \cdot 7H_2O$ (Green Vitriol) salt on thermal decomposition does not produce

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Consider the following reactions:$K_2Cr_2O_7 + NaCl + H_2SO_4 \rightarrow CrO_2Cl_2 + \text{Side Products}$$CrO_2Cl_{2(Vapour)} + NaOH \rightarrow B + NaCl + H_2O$$B + H^+ \rightarrow C + H_2O$The number of terminal $'O'$ atoms present in the compound $'C'$ is $..........$