Which of the following solutions display common ion effect?
A
HCl+NaCl
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B
H2S+KH
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C
NaHS+HCl
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D
H2SO4+K2S
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Solution
The correct option is AHCl+NaCl In common ion effect there should be common ions in the two or more chemicals. Here, HCl+NaCl shows common ion effect. Because Cl− is common in both.