Question

which equation do you use to

developed many ways to measure the acidity ol samples, all make it easier to identify the level of acidity of a solution. The pH correlates directly with the [H] in a solution. 1) Which equation do you use to obtain the [H] if you know the pH? [ht] - 100PH 2) Which equation do you use to obtain the pH if you know [H'] ? pH = -log[ht] NUU 3) Use these equations to complete the table below. Follow the example. pH [H] Acid, base or neutral? 7.0 107 neutral 10-10 12.3 10:55 3.1 10-78

Answer 1

You have written the right formula.

So, let's calculate according to formula.

(CH]: 10-19 i pH= -log CH] s-log C1010 ] :-(10) logi10) = lo logrio) 10 (1) (ii) PH = 12.3 CH3 : 10 PM -12.3 - 10 oß Antilog (-12.31 CH"]= 5.01*1093 - Base PH = 10 cive PH: 5.1 CH]: 10-PM =) Base ciü) CHT 165.s. cu pH: -log Cht) = -log close] :-(-5.5) log ric) 10-3.1 OR Antilog (-3.1) LH: 1, qq A 104 = Acid 5.5 (1) [PH=5.5 - Acid (V) CH3 = 107.8 i pH= -log this = -log[167.8] =-(-7.8) log 10 TpH = 7.8] 3) Base

Now,

if pH is less than 7, then it will be acid.

if pH is more than 7, then it will be base.

if pH is equal to 7 , then it will be neutral.

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THANK YOU.