MCQ
Number of neutron in ${C^{12}}$ is
- ✓$6$
- B$7$
- C$8$
- D$9$
Neutrons $=$ Mars numbes $-$ Protons
$=12-6$
Neutrons $=6$
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| Acid | $HF$ | $HCL$ | $HBr$ | $HI$ |
| $K_a$ | $7.2 \times 10^{-4}$ | $1 \times 10^6$ | $1 \times 10^9$ | $3 \times 10^{11}$ |
Which of these Bronsted acids would have the weakest conjugate base ?
$\text{Zn}+2\text{HCl}\xrightarrow{ \ \ \ \ \ \ \ }\text{ZnCl}_2+\text{H}_2$

$BaCl_2 + Na_2SO_4 \to BaSO_4 + 2NaCl$