Identify the products (A) and (B) in the reactions.
`RX+AgCNtoul((A))+AgX`
`RX+KCNtoul((A))+KX`

Options

A. `(P)rarr RCN, (Q)rarr RCN`
B. `(P)rarrRCN, (Q) rarr RNC`
C. `(P) - RNC, (Q) rarr RCN`
D. `(P) rarr RNC, (Q) rarr RNC`

Answer

To solve the problem, we need to identify the products (A) and (B) in the given reactions involving RX with AgCN and KCN.

### Step-by-Step Solution:

1. **Understanding the Reactions**:
- The first reaction is:
\[ RX + AgCN \rightarrow (A) + AgX \]
- The second reaction is:
\[ RX + KCN \rightarrow (A) + KX \]

2. **Analyzing the First Reaction**:
- In the first reaction, RX reacts with AgCN.
- AgCN is covalent in nature, meaning it does not dissociate into Ag⁺ and CN⁻ ions.
- Therefore, the CN group will directly attach to the R group from RX, leading to the formation of a nitrile.
- The product (A) formed here will be RNC (where R is the alkyl or aryl group) and AgX (where X is the halogen from RX).

3. **Analyzing the Second Reaction**:
- In the second reaction, RX reacts with KCN.
- KCN is ionic in nature, which means it dissociates into K⁺ and CN⁻ ions.
- The CN⁻ ion will directly attack the R group from RX, forming a nitrile as well.
- The product (A) in this case will also be RCN, and KX will be formed as a byproduct.

4. **Identifying Products (A) and (B)**:
- From both reactions, we can conclude that:
- Product (A) is RCN (or RNC, depending on the context, but both refer to the same functional group).
- Product (B) is AgX from the first reaction and KX from the second reaction, which are the respective salts formed.

### Final Products:
- **Product (A)**: RCN (or RNC)
- **Product (B)**: AgX and KX

### Conclusion:
The answer is that product (A) is RCN and product (B) can be AgX and KX depending on the reaction.

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