How much heat is released when 200 grams of sodium hydroxide dissolves in water?
A.-210k J
B.210k J
C.-223k J
D.223 k J
2.With respect to the Bronsted-Lowery model of acids and bases, which statments is "false"?
A.Acids donate an electron pair
B.Water can act as a base
C.Acids donate one or more protons
D.Water can act as an acid
2006-09-30 08:42:11 · 5 answers · asked by scienctist 1 in Education & Reference ➔ Homework Help
For question 2: it is C because only electrons can move, the number of protons in a molecule stay constant thus acids can't donate protons.
2006-09-30 09:16:37 · answer #1 · answered by skunk_luv 4 · 0⤊ 0⤋
2 is A
2006-09-30 16:05:14 · answer #2 · answered by when's my next vacation??? 4 · 0⤊ 0⤋
1 is B or D, it has to be positive since I remember sodium doesn't like water and makes sparks but I don't know exactly how much heat.
2. B and D are true. I'm pretty sure acids donate electrons since protons are in the nucleus, so it's got to be C.
2006-09-30 15:52:34 · answer #3 · answered by Jill&Justin 5 · 0⤊ 0⤋
1. nore info needed i think
2. A is false, acids have H+, so they have extra protons. water can go either way depending on the reaction and the other chemical involved.
2006-09-30 16:50:17 · answer #4 · answered by glazeddonut27 3 · 0⤊ 0⤋
water can act as a relative acid or base.acids donate protons?ooooooooooooops
2006-09-30 15:47:24 · answer #5 · answered by enord 5 · 0⤊ 1⤋