Number of chloride ions in 100 mL of 0.01 M HCl solution are

Question

Number of chloride ions in 100 mL of 0.01 M HCl solution are (A) 6.023 × 1022 (B) 6.023 × 1021 (C) 6.023 × 1020 (D) 6.023 × 1024

Tardigrade Admin · Accepted Answer

Number of moles of HCl = molarity × volume in L =(0.01 × 100/1000)=0.001 1 mole of HCl gives 1 mole of Cl - ions ∴ Number of Cl - ions given by 0.001 mol HCl 0.001 × 6.023 × 1023=6.023 × 1020

Q. Number of chloride ions in $100 m L$ of $0.01 M H Cl$ solution are

$6.023 \times 1 0^{22}$

$6.023 \times 1 0^{21}$

$6.023 \times 1 0^{20}$

$6.023 \times 1 0^{24}$

Number of moles of $H Cl =$ molarity $\times$ volume in $L$

$= \frac{0.01 \times 100}{1000} = 0.001$

1 mole of $H Cl$ gives $1$ mole of $C l^{-}$ ions

$∴$ Number of $C l^{-}$ ions given by $0.001 m o l H Cl$

$0.001 \times 6.023 \times 1 0^{23} = 6.023 \times 1 0^{20}$

Q. Number of chloride ions in 100mL of 0.01MHCl solution are

6.023×1022

6.023×1021

6.023×1020

6.023×1024