https://file.aiquickdraw.com/mathbot/file/1729845981389vznwpmb4.jpg

Let's work through the questions in the image you've provided, starting from part (a):

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### Question a: "Hanya salah satu garam yang bereaksi dengan HCl. Antara kalium nitrat (KNO₃) dan kalium karbonat (K₂CO₃), manakah yang bereaksi dengan HCl?"

Answer: **Kalium karbonat (K₂CO₃)** akan bereaksi dengan HCl, karena merupakan garam yang berasal dari asam lemah (H₂CO₃) dan basa kuat (KOH). Reaksi antara karbonat dan HCl menghasilkan gas CO₂ dan air. Sebaliknya, kalium nitrat (KNO₃) tidak bereaksi dengan HCl karena merupakan garam netral dari asam kuat (HNO₃) dan basa kuat (KOH).

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### Question b: "Tuliskan persamaan reaksi yang terjadi pada soal (a)."

Answer: Persamaan reaksi antara **kalium karbonat (K₂CO₃)** dan **asam klorida (HCl)** adalah sebagai berikut:

\[
K₂CO₃ (aq) + 2HCl (aq) → 2KCl (aq) + CO₂ (g) + H₂O (l)
\]

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### Question c: "Tuliskan persamaan reaksi ion bersih pada proses titrasi."

Answer: Persamaan ion bersih dalam titrasi antara **HCl** dan **KOH** adalah:

\[
H⁺ (aq) + OH⁻ (aq) → H₂O (l)
\]

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### Question d: "Hitung mol HCl yang bereaksi dengan KOH."

From the titration process, the volume of KOH used is 15.00 mL, with a concentration of 0.1 M. 

The moles of KOH (and thus HCl, as they react 1:1) can be calculated as:

\[
\text{mol KOH} = \text{Molarity} \times \text{Volume (in L)}
\]
\[
\text{mol KOH} = 0.1 \, \text{M} \times 0.015 \, \text{L} = 0.0015 \, \text{mol}
\]

Therefore, **0.0015 mol of HCl** reacts with KOH.

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### Question e: "Hitung mol HCl yang bereaksi dengan larutan R."

First, we need to account for the total moles of HCl in solution R:

\[
\text{Moles of HCl} = \text{Molarity} \times \text{Volume}
\]
\[
\text{Moles of HCl} = 0.075 \, \text{M} \times 0.1 \, \text{L} = 0.0075 \, \text{mol}
\]

Next, subtract the moles of HCl that reacted with KOH (from part d):

\[
\text{Moles of HCl in solution R} = 0.0075 - 0.0015 = 0.006 \, \text{mol}
\]

Thus, **0.006 mol** of HCl reacted with the sample in **solution R**.

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Let me know if you'd like further details on any of the calculations.

### Related Questions:
1. What is the chemical behavior of nitrate salts like KNO₃ in acidic solutions?
2. How does the titration curve look when HCl is titrated with KOH?
3. What is the significance of using K₂CO₃ in reactions with acids like HCl?
4. How do we calculate moles from a titration experiment?
5. What is the difference between complete and net ionic equations in chemical reactions?

### Tip:
Always ensure volumes are converted to liters (L) when using molarity in calculations for consistency in units.

A sample of 0.5 g contains potassium nitrate (KNO₃) and potassium carbonate (K₂CO₃). This sample is dissolved in 100 mL of 0.075 M HCl, with the solution heated to remove CO₂. From the solution, 25 mL is titrated using 15.00 mL of 0.1 M KOH. The task is to determine which salt reacts with HCl, write chemical equations, and perform stoichiometric calculations for HCl and KOH reactions.

Learn how to solve a stoichiometry problem involving potassium nitrate, potassium carbonate, HCl, and KOH. This problem covers key chemical concepts, such as molarity, titration, and chemical reactions, and is ideal for high school chemistry students.

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