(a) State whether the following statements are True or False. Justify your answer. 1. Weak acids have low electrical conductivity. 2. The concentration of hydrogen ions is equal in strong acids and weak acids. (b) Calculate the percentage of sodium (Na) in Na 2 B 4 O 7 .10H 2 O.

1. True Reason — Weak acids are partially dissociated in fused or aqueous solution hence allow small amount of electricity to flow through them and thus, have low electrical conductivity. 2. False Reason — Acids with a higher concentration of H + (aq) ions are strong acids and acids with a lower concentration of H + (aq) ions are weak acids. (b) Molecular weight of Na 2 B 4 O 7 .10H 2 O = 2(23) + 4(11) + 7(16) + 20(1) + 10(16) = 46 + 44 + 112 + 20 + 160 = 382 g 382 g of Na 2 B 4 O 7 .10H 2 O contains 46 g of Na 100 g of Na 2 B 4 O 7 .10H 2 O will contain = x 100 = 12.04% Hence, 12.04% of sodium is present in Na 2 B 4 O 7 .10H 2 O

JOIN NOW

Chemistry

(a) State whether the following statements are True or False. Justify your answer.
Weak acids have low electrical conductivity.
The concentration of hydrogen ions is equal in strong acids and weak acids.
(b) Calculate the percentage of sodium (Na) in Na₂B₄O₇.10H₂O.

Acids Bases Salts

4 Likes

Answered By

2 Likes

Chemistry

(a) State whether the following statements are True or False. Justify your answer.
Weak acids have low electrical conductivity.
The concentration of hydrogen ions is equal in strong acids and weak acids.
(b) Calculate the percentage of sodium (Na) in Na₂B₄O₇.10H₂O.

Acids Bases Salts

Related Questions

An organic compound has an empirical formula (CH₂O). Its vapour density is 45. Then what will be the molecular formula of the compound?

State the conditions required for the following reactions.
(a) Conversion of ammonia to nitric oxide in presence of air.
(b) Conversion of hydrogen chloride to chlorine.
(c) Conversion of sodium bisulphate to sodium sulphate.

An organic compound, whose vapour density is 45, has the following percentage composition
H = 2.22%, O = 71.19% and remaining carbon.
Calculate,
(a) it's empirical formula, and
(b) it's molecular formula

Identify the functional group in the following organic compounds.
(a) CH₃CH₂CH₂COCH₃
(b) CH₃CH₂CH₂COOH

Chemistry

(a) State whether the following statements are True or False. Justify your answer.Weak acids have low electrical conductivity.The concentration of hydrogen ions is equal in strong acids and weak acids.(b) Calculate the percentage of sodium (Na) in Na2B4O7.10H2O.

Acids Bases Salts

Related Questions

An organic compound has an empirical formula (CH2O). Its vapour density is 45. Then what will be the molecular formula of the compound?

State the conditions required for the following reactions.(a) Conversion of ammonia to nitric oxide in presence of air.(b) Conversion of hydrogen chloride to chlorine.(c) Conversion of sodium bisulphate to sodium sulphate.

An organic compound, whose vapour density is 45, has the following percentage compositionH = 2.22%, O = 71.19% and remaining carbon.Calculate,(a) it's empirical formula, and(b) it's molecular formula

Identify the functional group in the following organic compounds.(a) CH3CH2CH2COCH3(b) CH3CH2CH2COOH

(a) State whether the following statements are True or False. Justify your answer.
Weak acids have low electrical conductivity.
The concentration of hydrogen ions is equal in strong acids and weak acids.
(b) Calculate the percentage of sodium (Na) in Na₂B₄O₇.10H₂O.

An organic compound has an empirical formula (CH₂O). Its vapour density is 45. Then what will be the molecular formula of the compound?

State the conditions required for the following reactions.
(a) Conversion of ammonia to nitric oxide in presence of air.
(b) Conversion of hydrogen chloride to chlorine.
(c) Conversion of sodium bisulphate to sodium sulphate.

An organic compound, whose vapour density is 45, has the following percentage composition
H = 2.22%, O = 71.19% and remaining carbon.
Calculate,
(a) it's empirical formula, and
(b) it's molecular formula

Identify the functional group in the following organic compounds.
(a) CH₃CH₂CH₂COCH₃
(b) CH₃CH₂CH₂COOH