Processing math: 100%

Home / Aptitude Tests / Chemistry / If 20 cm

$^3$ ...

If 20 cm $^3$ of sodium hydroxide was neutralized by 2...

If 20 cm $^3$ of sodium hydroxide was neutralized by 20 cm $^3$ of 0.01 mol dm3 tetraoxosulphate(VI) acid, what is the concentration of the solution?

A.

0.010

B.

0.020

C.

0.100

D.

0.150

View answer & explanation

Correct answer is B

$frac{CaVa}{CbVb}$ = $frac{Na}{Nb}$

( 0.01 X 20 ) / (Cb X 20) = 1 / 2

cross multiply → Cb = (0.01 X 20 X 2) / ( 20 X 1)

Cb = 0.02 mol/dm $^3$

See all Chemistry questions & answers

See more WAEC questions & answers

Similar Questions

Elactrostatic force of attraction between sodium ion and halide ion is greatest in ...

Which of the following conduct electricity? ...

Zn(s) + CuSO4(aq) $\to$ ZnSO4(aq) + Cu(s) In the reaction above, the oxidizing agent is...

If 20 cm3 of distilled water is added to 80cm 3 of 0. 50 mol dm-3 hydrochloric acid, the new concent...

According to the kinetic theory of gases, the pressure exerted by a gas is due to ...

The metal extracted from cassiterite is ...

Substances which absorb water from the atmosphere without dissolving in it are sid to be ...

The component of air that can be removed by alkaline pyrogallol solution is ...

The reactions ethyne are mainly ...

What is the atomic number of Nobelium? ...

Aptitude Tests

Numerical Reasoning Questions and Answers

Abstract Reasoning Questions and Answers

Data Interpretation Questions and Answers

Spatial Reasoning Questions and Answers

Nigeria General Knowledge Questions and Answers

Quantitative Reasoning Questions and Answers

Verbal Reasoning Questions and Answers

Personality Test

Logical Reasoning Questions and Answers

Situational Judgement Questions and Answers

Microsoft Office Questions and Answers

Puzzles Questions and Answers

Typing Speed and Accuracy Test

View latest jobs in Nigeria today