If 1 stands for true and 0 stands for false, then choose the correct code for the following statement: H2SO4 is a weaker acid than HCl, yet HCl is evolved when conc. H2SO4 is added to NaCl.
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Solution
H2SO4 exists in liquid formed but HCl forms in reaction is gaseous, so it escapes and shifts the equilibrium towards right. NaCl+H2SO4→NaHSO4+HCl