When a mixture of \( \mathrm{NaBr}, \mathrm{NaCl} \) is repeatedly digested with \( \mathrm{H}_{...

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When a mixture of \( \mathrm{NaBr}, \mathrm{NaCl} \) is repeatedly digested with \( \mathrm{H}_{2} \mathrm{SO}_{4} \), all the halogens are expelled and \( \mathrm{Na}_{2} \mathrm{SO}_{4} \) is formed quantitatively. With a particular mixture, it was found that the mass of \( \mathrm{Na}_{2} \mathrm{SO}_{4} \) obtained are precisely the same as the mass of \( \mathrm{NaBr} \) and \( \mathrm{NaCl} \) mixture taken. \( \mathrm{Calculate} \) the rulass ratio of \( \mathrm{NaCl} \) and \( \mathrm{NaBr} \) in mixture.
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