How much water is needed to dilute 10 mL of 10 N hydrochloric acid to make it exactly decinormal (0.1 N)?

Question

How much water is needed to dilute 10 mL of 10 N hydrochloric acid to make it exactly decinormal (0.1 N)? (A) 990 mL (B) 1000 mL (C) 1010 mL (D) 100 mL

Tardigrade Admin · Accepted Answer

underset text(Initial)N 1 V 1= underset text (Final)N 2 V 2 10 × 10=0.1 × V2 or V2=1000 m L ∴ Volume of water =1000-10=990 m L

Q. How much water is needed to dilute $10 m L$ of $10 N$ hydrochloric acid to make it exactly decinormal $(0.1 N)$ ?

$990 m L$

$1000 m L$

$1010 m L$

$100 m L$

$(Initial) N_{1} V_{1} = (Final) N_{2} V_{2}$
$10 \times 10 = 0.1 \times V_{2}$
or $V_{2} = 1000 m L$
$∴$ Volume of water $= 1000 - 10 = 990 m L$

Q. How much water is needed to dilute 10mL of 10N hydrochloric acid to make it exactly decinormal (0.1N)?

990mL

1000mL

1010mL

100mL