The number of molecules in 100m L of 0.02N H2SO4 is

Question

The number of molecules in 100m L of 0.02N H2SO4 is (A) 6.02 × 1022 (B) 6.02 × 1021 (C) 6.023 × 1020 (D) 6.02 × 1018

Tardigrade Admin · Accepted Answer

For H2SO4, Normality, N = 2M or M = (N/2) = (0.02/2) = 0.01 Moles of H2SO4 = (0.01 × 100/1000) = 1 × 10-3 ∴ Number of molecules in 100 mL of 0.02 N H2SO4 = 1 × 10-3 × NA = 1 × 10-3 × 6.023 × 1023 = 6.023 × 1020

Q. The number of molecules in 100m L of 0.02N $H_{2} S O_{4}$ is

$6.02 \times 1 0^{22}$

$6.02 \times 1 0^{21}$

$6.023 \times 1 0^{20}$

$6.02 \times 1 0^{18}$

Q. The number of molecules in 100m L of 0.02N H2​SO4​ is

6.02×1022

6.02×1021

6.023×1020

6.02×1018

For H2​SO4​, Normality, N = 2M or M = 2N​=20.02​=0.01 Moles of H2​SO4​=10000.01×100​=1×10−3 ∴ Number of molecules in 100 mL of 0.02 N H2​SO4​=1×10−3×NA​ = 1×10−3×6.023×1023 = 6.023×1020

Q. The number of molecules in 100m L of 0.02N $H_{2} S O_{4}$ is

$6.02 \times 1 0^{22}$

$6.02 \times 1 0^{21}$

$6.023 \times 1 0^{20}$

$6.02 \times 1 0^{18}$