Medium
Fill in the blanks:
$(1)$ ........... solution is added to produce the precipitate of $BaSO_4$ in the estimation of sulphur.
$(2)$ .......... and .... precipitate will be produced by the estimation of phosphorus.
$(3)$ How many elements are estimated in organic compounds?
$(4)$ ......... gas is produced in the Dumas method,but ....... gas is produced in the Kjeldahl's method.
$(1)$ ........... solution is added to produce the precipitate of $BaSO_4$ in the estimation of sulphur.
$(2)$ .......... and .... precipitate will be produced by the estimation of phosphorus.
$(3)$ How many elements are estimated in organic compounds?
$(4)$ ......... gas is produced in the Dumas method,but ....... gas is produced in the Kjeldahl's method.
(N/A) $(1)$ $BaCl_2$ solution is added to produce the precipitate of $BaSO_4$ in the estimation of sulphur.
$(2)$ $Mg_2P_2O_7$ (magnesium pyrophosphate) or $(NH_4)_3PO_4 \cdot 12MoO_3$ (ammonium phosphomolybdate) precipitate is produced in the estimation of phosphorus.
$(3)$ There are $9$ elements estimated in organic compounds: $C, H, O, N, P, S, Cl, Br, I$.
$(4)$ $N_2$ gas is produced in the Dumas method,while $NH_3$ gas is produced in the Kjeldahl's method.
$(2)$ $Mg_2P_2O_7$ (magnesium pyrophosphate) or $(NH_4)_3PO_4 \cdot 12MoO_3$ (ammonium phosphomolybdate) precipitate is produced in the estimation of phosphorus.
$(3)$ There are $9$ elements estimated in organic compounds: $C, H, O, N, P, S, Cl, Br, I$.
$(4)$ $N_2$ gas is produced in the Dumas method,while $NH_3$ gas is produced in the Kjeldahl's method.
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Similar Questions
During the estimation of nitrogen present in an organic compound by the Kjeldahl method,the ammonia evolved from $0.5 \ g$ of the compound neutralized $10 \ mL$ of $1 \ M$ $H_{2}SO_{4}$. Find the percentage of nitrogen in the compound. (in $\%$)
Medium
View Solution$0.1 \ g$ of an organic compound was analyzed by the Kjeldahl method. The $NH_3$ produced was absorbed in $30 \ mL$ of $N/5$ $H_2SO_4$. The remaining acid required $20 \ mL$ of $N/10$ $NaOH$ for neutralization. Calculate the percentage of nitrogen in the organic compound.
Difficult
View Solution$0.8 \ g$ of an organic compound was analysed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be $42 \ \%$,then $.... \ mL$ of $1 \ M$ $H_2SO_4$ would have been neutralized by the ammonia evolved during the analysis.
DifficultJEE MAIN 2021
View Solution$0.400 \ g$ of an organic compound $(X)$ gave $0.376 \ g$ of $AgBr$ in Carius method for estimation of bromine. The $\%$ of bromine in the compound $(X)$ is $.........$. (Given: Molar mass $AgBr = 188 \ g \ mol^{-1}$,$Br = 80 \ g \ mol^{-1}$)
Match Column-$I$ and Column-$II$ with the correct relation:
Column-$I$ Column-$II$ $(i)$. Estimation of carbon and hydrogen $(p)$. $AgX$ $(ii)$. Estimation of nitrogen $(q)$. $CO_2$ and $H_2O$ $(iii)$. Estimation of halogen $(r)$. $N_2$ $(iv)$. Estimation of sulphur $(s)$. $Mg_2P_2O_7$ $(v)$. Estimation of phosphorus $(t)$. $BaSO_4$
| Column-$I$ | Column-$II$ |
|---|---|
| $(i)$. Estimation of carbon and hydrogen | $(p)$. $AgX$ |
| $(ii)$. Estimation of nitrogen | $(q)$. $CO_2$ and $H_2O$ |
| $(iii)$. Estimation of halogen | $(r)$. $N_2$ |
| $(iv)$. Estimation of sulphur | $(s)$. $Mg_2P_2O_7$ |
| $(v)$. Estimation of phosphorus | $(t)$. $BaSO_4$ |
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