Chemistry

A cell shorthand notation can be written as A / A+ // B²+ /B. The double slash in the notation represents the?

A. electrolyte B. electrodes C. salt bridge D. solid-liquid interface Correct Answer: Option C - salt bridge

5 years ago

What will be the effect of decrease in temperature on the reaction?

Consider the reaction: A + 2B(g) ⇌ 2C + D(g) (Δ H = +ve) A. Rate of backward reaction will…

5 years ago

The following are isoelectronic ions except?

A. Na+ B. Mg²+ C. Si²+ D. O²+ Correct Answer: Option C - Si²+ Explanation Two or more ions are…

5 years ago

The two ions responsible for hardness in water are?

A. Ca²+ and Mg²+ B. K+ and Mg²+ C. Ca²+ and Li+ D. Ca²+ and Na+ Correct Answer: Option A…

5 years ago

What was the free energy change?

The reaction represented by the equation C(s) + H2O(l) → CO(s) + H2(s) was carried out at 27°C if the…

5 years ago

The complex salt formed when aluminium dissolves in sodium hydroxide solution is?

A. Na3AI(OH)4 B. Na2AI(OH)3 C. NaAI(OH)3 D. Na4AI(OH)4 E. NaAI(OH)4 Correct Answer: Option E - NaAI(OH)4

5 years ago

Which of the following is a waste product in the Solvary Process for the manufacture of sodium trioxocarbonate (IV)?

A. Ammonium chloride B. Brine C. Limestone D. Calcium oxide E. Calcium chloride Correct Answer: Option E - Calcium chloride

5 years ago

Which of the following correctly explains why iodine crystals change directly into the gaseous state when heated?

  A. lodine crystals sublime B. lodine atoms are held together by strong forces C. lodine molecules are held together…

5 years ago

Aqueous sodium trioxocarbonate (IV) solution is alkaline because?

A. acid from which it is formed is strong B. sodium is an alkali metal C. sodium trioxocarbonate (IV) is…

5 years ago

Which of the following equations represents the reaction of chlorine gas with hot concentrated sodium hydroxide solution?

A. 2KOH+CI2 → KCIO + KCI + H2O B. 4KOH + 2CI2 → 4KCI + 2H2O + O2 C. 6KOH…

5 years ago