Limescale That Builds Up in Showers, Kettles, and Pipes Is $\rightarrow$

question 13

Multiple Choice

Limescale that builds up in showers, kettles, and pipes is often primarily composed of calcium carbonate.One limescale remover contains sulfamic acid (H₃NSO₃) , which can be considered to be a strong monoprotic acid.Which reaction summarizes the action of sulfamic acid on limescale?

• A)H ⁺ (aq)+ H₂NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\)HCO₃ ^- (aq) + HNSO3^{2 -} (aq) + Ca ⁺ (aq)
• B)3H ⁺ (aq) + NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\) Ca ^{2 +} (aq) + HSO₃ ^- (aq) + NO₂ (g) + CO₂ (g) +H₂O (l)
• C)2H ⁺ aq) +2 H₂NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\) CO₂ (g) +2 H₂NSO₃ ^- (aq) + Ca ^{2 +} (aq) +H₂O (l)
• D)3H ⁺ (aq) + NSO₃^{3 -} (aq) + CaCO₃ (s) \(\rightarrow\) Ca ^{2 +} (aq) + NSO₃^{3 -} (aq) + CO₂ (g) + 3 HNO₂ (aq)
• E)3H⁺(aq) + NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\) CaS(s) + HCN(g) +3H₂O(l)

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Definitions:

White Collar Crimes

Refers to financially motivated nonviolent crimes committed by business and government professionals.

Blue Collar Crimes

Crimes committed by individuals from a lower socio-economic background, usually involving manual labor or non-office environments, and often include theft, vandalism, or assault.

Dependent Personality Disorder

A psychological disorder marked by an overwhelming desire for care, resulting in dependent and needy actions, alongside a deep fear of being left alone.

Schizophrenia

A long-term mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation.