Adding hydrogen chloride to water the pH decrease.
HCl : makes it acidic. it decreases the pH NaOH : makes it alkaline. it increases the pH
Sodium bicarbonate increases the pH of water.
Decreasing the temperature of water the value of pH increase.
Heating pure water the pH decrease.
1 ppm HCl in aqueous solution would have a pH of around 6.
pH = - log[H+] so a 0.01 M solution of HCl has, pH= 2
Since pH=-log[H+], then [H+]=10-pH 10-1.5=.0316 And since HCl is a strong monoprotic acid, the [H+]=[HCl] So the concentration is approximately 0.0316M
in small, dilute, quantities, it will just raise the pH.
HCl is an acid. The hydrogen part of the molecule makes it so. A pH below 7 is acidic and a pH above 7 is basic. It makes sense that adding an acid to water would lower the pH.
7.What effect does water pH have on the rusting of nails?
- log(0.25 M HCl) = 0.6 pH ------------
- log(0.00450 M HCl)= 2.3 pH=======
Hydrochloric acid is HCl. It is a H plus (H^+) donor, and so adding it to water will INCREASE the H^+ concentration. Increasing the H^+ concentration results in a DECREASE in pH.
Find moles HCl. 5 g HCl (1 mole HCl/36.450 grams) = 0.1372 moles HCl Now, Molarity = moles of solute/Liters of solution Molarity = 0.1372 moles HCl/1 liter = 0.1372 M HCl Then. -log(0.1372 M HCl) = 0.9 pH ( you might call it 1, but pH can be off the scale ) -----------
raising the pH of the water
.260 M of HCL, not 260 More than likely correct, but, - log(0.260 M HCl) = 0.6 pH ----------- ( pH can be below 1 )
HCl : makes it acidic. it decreases the pH NaOH : makes it alkaline. it increases the pH