Compute the number of ions present in 5.85 g of sodium chloride.
A
1.2042×1023 ions
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B
1.2042×1026 ions
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C
1.2042×1029 ions
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D
1.2042×1030 ions
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Solution
The correct option is A1.2042×1023 ions According to given data, 5.85 g of NaCl=5.8558.5=0.1 moles of NaCl particle Each NaCl particle contains 2 ions Na+ and Cl− ⇒ Total moles of ions =0.1×2=0.2 moles No. of ions =0.2×6.022×1023=1.2042×1023 ions