According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions $(OH^-)$ when dissolved in water and an acid is defined as a substance which donates hydrogen ions $(H^+)$ in water.

An acid is represented as :

$HX\rightarrow H^++X^-$

1. When metal is treated with an acid such as $HCl$ , if the metal is more reactive than hydrogen displaces hydrogen from its salt solution and thus produce zinc chloride and hydrogen gas.

$M+xHCl(aq)\rightarrow MCl_x(aq)+xH_2(g)$

2. When carbonates are treated with acid, double displacement takes place ad carbon dioxide is released as a gas.

$MCO_3(aq)+xHCl(aq)\rightarrow MCl_x(aq)+xH_2O(l)+CO_2(g)$

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2 years ago

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To determine the pH of a solution using a pH indicator paper, you need a .

bonufazy [111]

PH is the water and it color blue

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Explaian why pressure decreases but temperature varies as altitude increases

prohojiy [21]

Answer:As you increase your altitude, the air pressure decreases because there is less air above pressing down. Therefore that air temperature also decreases proportionately.

Explanation:

please mark as brainliest

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