Chemistry, 09.03.2021 14:00 yeetusbobeetus
1. (a) Describe how 500 cm' of 0.1 moldm-' H2SO4 could be prepared from 100 cm of
2 moldm stock solution of the acid.
(b) (i) State the effect of aqueous solution of the following salts on litmus paper.
(a) NaNO3
(B) CH3COONa
() Al2(SO4)3
Give a reason for each answer in (b) above
2. Give a reason for each of the following laboratory practices:
(i) KMnO4 solution is not acidified with HNO3 before titration
(ii) FeSO4 solution is usually prepared fresh when needed
(iii) Alkali are not stored in glass stopped reagent bottles.
Answers: 1
Chemistry, 22.06.2019 08:30
How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?
Answers: 1
Chemistry, 22.06.2019 11:30
Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.
Answers: 3
Chemistry, 23.06.2019 09:30
How many significant figures are in the following numbers ? a. 0.0002030 b. 2.000 c. 2.008900 d. 145.00
Answers: 2
1. (a) Describe how 500 cm' of 0.1 moldm-' H2SO4 could be prepared from 100 cm of
2 moldm stock sol...
Mathematics, 26.02.2021 08:20
Mathematics, 26.02.2021 08:20
Social Studies, 26.02.2021 08:20
History, 26.02.2021 08:20
Business, 26.02.2021 08:20
Health, 26.02.2021 08:20
Mathematics, 26.02.2021 08:20
Mathematics, 26.02.2021 08:20
Mathematics, 26.02.2021 08:20
Chemistry, 26.02.2021 08:20
Mathematics, 26.02.2021 08:20
Mathematics, 26.02.2021 08:20