reagent for thermal decomposition
Added by Oluwasegun S.
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Thermal decomposition is a chemical reaction where a compound breaks down into two or more products when heated. This process often requires a specific temperature to occur. Show more…
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When $16.8 \mathrm{~g}$ of white solid $X$ were heated, $4.4 \mathrm{~g}$ of acid gas $A$ that turned lime water milky was driven off together with $1.8 \mathrm{~g}$ of a gas $B$ which condensed to a colourless liquid. The solid that remained, $Y_{1}$ dissolved in water to give an alkaline solution, which with excess barium chloride solution gave a white precipitate $Z$. The precipitate effervesced with acid, giving off carbon dioxide. Identify $A, B$ and $Y$ and write down the equation for the thermal decomposition of $X$.
Analytical Chemistry
Topic 1 : Analysis of Inorganic Compounds
A $100.00 \mathrm{g}$ sample of white powder $\mathrm{A}$ is heated to $550^{\circ} \mathrm{C}$ At that temperature the powder decomposes, giving off colorless gas $\mathrm{B}$, which is denser than air and is neither flammable nor does it support combustion. The products also include $56 \mathrm{g}$ of a second white powder $\mathrm{C}$. When gas B is bubbled through a solution of calcium hydroxide, substance A reforms. What are the identities of substances $A, B,$ and $C ?$
When $1.00 \mathrm{g}$ of a white solid $\mathrm{A}$ is strongly heated, you obtain another white solid, $\mathbf{B},$ and a gas. An experiment is carried out on the gas, showing that it exerts a pressure of $209 \mathrm{mm}$ Hg in a $450-\mathrm{mL}$ flask at $25^{\circ} \mathrm{C} .$ Bubbling the gas into a solution of $\mathrm{Ca}(\mathrm{OH})_{2}$ gives another white solid, $\mathrm{C}$. If the white solid B is added to water, the resulting solution turns red litmus paper blue. Addition of aqueous HCl to the solution of $\mathbf{B}$ and evaporation of the resulting solution to dryness yield 1.055 g of a white solid D. When $\mathbf{D}$ is placed in a Bunsen burner flame, it colors the flame green. Finally, if the aqueous solution of $\mathbf{B}$ is treated with sulfuric acid, a white precipitate, $\mathbf{E},$ forms. Identify the reaction scheme. (IMAGE CAN'T COPY)
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